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Mercedes-Benz SLS AMG E-Cell
Mercedes-Benz showed off the electric version of its SLS AMG super car, in fluorescent yellow-green.
As with the gasoline version, the SLS AMG E-Cell uses gullwing doors for cabin access.
This vehicle uses the SLS AMG's body and most of its original suspension, but replaces the 6.3-liter V-8 engine with four electric motors, one positioned near each wheel.
Combined with a 400-volt lithium ion battery pack producing 48 kilowatt hours, the SLS AMG E-Cell gets to 60 mph in 4 seconds, just .3 seconds slower than the gasoline-powered version.
Unlike the SLS AMG, the SLS AMG E-Cell has all-wheel-drive due to the four electric motors, which could give it a cornering advantage.
Mercedes-Benz has not mentioned the SLS AMG E-Cell's range.
The four electric motors, one at each wheel, giving the car all-wheel-drive.
Mercedes-Benz points out that it did not use hub motors, which would have added unsprung weight.
Instead, the motors are set back on the car's suspension, with short axles driving the wheels.
The four electric motors and battery pack give this electric super car 526 horsepower and 649 pound-feet of torque, a little less than the 563 horsepower afforded by the gasoline engine.
The gasoline-powered SLS AMG has a double wishbone front suspension, but that had to be replaced with a multi-link suspension to accommodate the front drive motors.
The SLS AMG E-Cell keeps the ceramic brakes of its gasoline equivalent, but also gets regenerative braking.
Further, liquid cooling and a heating element keep the battery pack at optimum temperature for long life.
The rear spoiler automatically deploys at speeds over 75 mph.
The SLS AMG E-Cell's front diffuser also lowers at this speed, reducing the amount of air under the car. The lack of a tailpipe meant the rear diffuser could be given a steeper angle.
Mercedes-Benz has not announced plans to produce the SLS AMG E-Cell.
The car serves as an early attempt by Mercedes-Benz's performance division to show it can remain relevant in a post-fossil-fuel era.
Rather than a gas filler, the car has a plug, it complies with the SAE J1772 standard for electric vehicle charging.
The battery pack is made up of 320 lithium-ion polymer cells containing 48 kilowatt-hours of electricity.
The steering is powered by an electro-hydraulic unit.