The Cadillac Converj Concept is the luxury automaker’s first attept at a dedicated extended-range electric vehicle and Cadillac seems to have hit a grand slam. At first glance, the Converj Concept is unmistakeably identified as a Cadillac creation. The aggressive body styling reflects the similar features of the current Cadillac lineup (CTS, STS, Escalade, XLR, SRX). While four-seaters are uncommon in today’s auto industry, stunningly beautiful E-REVs are even rarer. Hit the jump for more!

With the Chrysler 200C EV, Dodge Circuit EV, and Lincoln C concepts being revealed at the Detroit Auto Show, the American auto industry has quite a bright future. While Toyota and Honda beat out the Big Three in offering a dedicated hybrid, the Big Three are countering by offering their customers a plethora of decently efficient alternative-fuel vehicles. The Detroit International Auto Show may have very well begun the reversal of fortunes for the Big Three.

Cadillac’s signature Voltec technology is responsible for the electric propulsion that will hopefully have this Caddy cruising down Sunset Boulevard with efficiency and classic American muscle. The T-shaped battery provides a whopping 16kW-h of power and is paired with a 4-cylinder engine generator and electric drive unit. Voltec allows the Converj to travel approximately 40 miles emission-free before requiring petroleum assistance. A 240V outlet will fully recharge the Converj in 3 hours while a standard 120V outlet will require 8 hours of connection to do the same job.

When the battery is low on power, the Converj’s onboard computer will activate the gasoline engine and use it to generate the required power to instigate movement. In addition, kinetic energy captured from braking is converted into power for the battery. Similar to the 2010 Toyota Prius, the Converj will be equipped with a solar panel to assit in powering onboard electronics. For consumers who commute less than 40 miles each day, the Converj will have extremely low cost of ownership. The Converj is essentially an all-electric vehicle if it’s charged per 40 miles of travel. A top speed of 100mph means you can drive at max speed for 24 minutes before you need to recharge.

Dissimilar to the Prius is the Converj’s ridiculously good looking curves and edges. The “forward-leaning profile” brings this luxury E-REV to life. Not only are the edges aesthetically satisfying, they are aerodynamic. Notice the bold grille has very small pores, which reduces drag. Even the wheels are designed to provide a smoother ride by pushing air outward. Unseen to the elevated eye is the belly pan which reduces under-body drag and, in turn, ride noise. Audi may have perfected the horizontal arrangement of headlights (see Audi R8), but Cadillac takes the prize for the best vertically-oriented headlights. For the record, Volvo takes the cake for vertical backlights (see Volvo XC90).

Press release after the gallery:

” CONVERJ: THE “CADILLAC” OF ELECTRIC VEHICLES

Luxury coupe concept continues GM’s leadership in the electrification of the automobile

DETROIT – General Motors unveiled a further glimpse at the potential of electric propulsion today, this time in the form of luxury transportation, with the Cadillac Converj Concept. The Cadillac Converj was developed as a well-appointed grand touring coupe with a bold design and a host of interactive technology.

The four-passenger Converj concept is intended to show how GM’s revolutionary electric propulsion technology – called Voltec – can power a luxury coupe with a typically Cadillac “no compromises” design. The technology enables up to 40 miles of gas- and emissions-free electric driving with extended-range capability of hundreds of miles.

Bob Lutz, GM’s vice chairman of Global Product Development, said the Converj concept has production substance. “It’s a logical extension of our plan to reinvent the automobile,” he said. “It clearly shows what a Cadillac electric vehicle could look like, and clearly indicates that global luxury customers can have a car that has both strong design and electric propulsion with a total range of hundreds of anxiety-free miles.”

Cadillac’s extended-range electric vehicle (E-REV) concept has a new body style that is an evolution of the brand’s traditional Art and Science design theme. An aggressive, forward-leaning arc profile is the foundation for the sporting stance. And more than a Cadillac in form, Converj is also intended to be a Cadillac in substance, with the premium materials, technology and driving dynamics that are hallmarks of the brand.

Voltec – innovative propulsion technology

The Cadillac Converj’s Voltec electric propulsion system is made up of a 16-kWh, T-shaped battery, an electric drive unit, and a four-cylinder engine-generator. It uses electricity as its primary source to drive the car.

A thermally managed battery pack contains more than 220 lithium-ion cells that provide the primary power to drive the Converj electrically up to 40 miles without using fuel or producing tailpipe emissions. The battery is integrated into the Converj’s chassis and stores electricity from the grid when the vehicle is plugged in. It takes less than three hours to recharge the battery at 240V, or about eight hours from a 120V outlet.

When the battery’s energy is low, the Converj seamlessly switches to extended-range mode. During this secondary level of operation, electricity needed to power the vehicle is created on-board by a flex-fuel-powered engine that operates much like a home generator to create electricity. The engine-generator ensures a constant supply of power for hundreds of miles until the car is refueled or plugged in to recharge the battery. This extended-range mode eliminates the range anxiety that comes with driving pure electric vehicles that offer no backup power when the battery charge is low.

Whether in electric or extended-range mode, the Converj is propelled all the time by an electric drive unit. It converts electrical energy from the battery or the engine-generator into mechanical energy to drive the front wheels. It also delivers 273 lb.-ft. (370 Nm) of instant torque, for a quick launch, and 120 kW of power. The top speed is 100 mph.

There is no compromise in vehicle performance in either mode of operation. To enhance the ride feel, the Converj also features GM’s Magnetic Ride Control; and for even greater efficiency, energy during braking is captured and stored in the battery.

Pure Cadillac design

There’s no mistaking the Converj for anything but a Cadillac, according to Lutz. “An aggressive, forward-leaning profile hints at a new, progressive theme and proportion in Cadillac’s design evolution,” he says. “The new proportion showcases a uniquely shaped, modern vision of a personal luxury 2+2.”

The overall shape is reinforced by a prominent, sweeping body line with large, 21-inch (front) and 22-inch (rear) wheels pushed to the edges of the body. The Converj exterior is painted a dark silver tri-coat that GM designers dubbed “Reaction.”

An all-glass roof incorporates solar panels that help offset power drain from the vehicle’s accessories. Additionally, several aerodynamic and design efficiencies were incorporated to enhance the driving range, including:

A full under-vehicle cover (belly pan)

Minimal grille openings that reduce drag at the front of the vehicle

Low-profile rearview cameras replace conventional outside mirrors to reduce drag

Wheels are shaped to push air outward for smoother body side airflow

The Converj also incorporates vertical headlamp and taillamp elements, with light pipe technology.

“Vertical lamps are Cadillac signatures and the Converj builds on the brand’s light pipe technology with bolder light emitting diode (LED) and high-intensity discharge elements front and rear,” said Clay Dean, global design director for Cadillac. “There is also a unique daylight light ‘spear’ at the top of the headlamps.”

Luxury meets technology inside

The Converj’s interior has advanced features and luxurious appointments blending efficiency and environmental consciousness. The 2+2 configuration is trimmed in contrasting Winter White synthetic suede – including the top of the instrument panel – and Midnight Black leather, with polished aluminum and wood grain accents. Renewable materials are used throughout such as wool-blend carpeting, a headliner made from silk, suede made from post-industrial content and more.

A technologically advanced driver center increases efficiency and reduces the draw on the battery. Features include:

New, organic light-emitting diode technology used on reconfigurable instrument cluster

Touch-screen navigation, climate, center-stack controls and audio systems

Adjustable, overhead white ambient lighting

Unique “power on” sequence featuring blue-lit console graphics

Screen displays for features including regenerative braking, battery charge level and power output

No inside rearview or outside mirrors; cameras provide surrounding images on a screen placed high on the instrument panel for a full, panoramic view

Push-button ignition and power-folding front seats

General Motors Corp. (NYSE: GM), the world’s largest automaker, has been the annual global industry sales leader for 77 years. Founded in 1908, GM today employs about 252,000 people around the world. With global headquarters in Detroit, GM manufactures its cars and trucks in 34 countries. In 2007, nearly 9.37 million GM cars and trucks were sold globally under the following brands: Buick, Cadillac, Chevrolet, GMC, GM Daewoo, Holden, HUMMER, Opel, Pontiac, Saab, Saturn, Vauxhall and Wuling. GM’s OnStar subsidiary is the industry leader in vehicle safety, security and information services. More information on GM can be found at www.gm.com.

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SPECIFICATIONS

General

Vehicle type: 2-door, front-wheel-drive 2+2 coupe

Category: extended-range electric vehicle

Chassis: independent McPherson struts, front magnetic ride, compound crank twist axle rear, four-wheel disc brakes, full regenerative brakes to maximize energy capture, electric power-assist steering

Seating capacity:

four

Performance

Top speed (mph / km/h):100 / 161

EV range, city and highway (miles): Up to 40, based on EPA cycle

Dimensions

Wheelbase (in / mm):108 / 2742

Length (in / mm):182 / 4620

Width (in / mm):74 / 1883

Height (in / mm):55 / 1386

Battery system

Type:lithium-ion (w/ liquid-controlled thermal management system)

Energy (kWh):16

Charge time: Less than 3 hours at 240V/8 hours at 120V

Electric drive unit

Power (kW):120

Torque (lb-ft / Nm):273 / 370

Exterior

Tire size:specially developed low rolling resistance tires on 21- and 22-inch forged aluminum wheels

Note: Information shown is current at time of publication. Please visit our GM Media web site at http://media.gm.com for updates.”