The all-electric Mercedes-Benz SLS AMG E-Cell Prototype has slightly less horsepower than its gas-powered sibling. Despite the E-Cell's impressive numbers, why remove the SLS AMG's 6.2-liter, 563 horsepower V-8, one of the most sonically rewarding supercar mills in production? The two motors up front did require AMG to redesign the front suspension. It should sure stop like one: The E-Cell wears the SLS's optional ceramic composite brakes, sized 18.5-inches front and 14.2-inches rear. Two cooling circuits maintain the four electric motors and the power electronics. The driver can control the splitter through buttons on the driver-focused AMG Drive Unit, which also houses the start button, rear spoiler control, and new park, reverse, and drive buttons. A revised center console features a ten-inch touch screen infotainment system, which operates audio, climate, and navigation functions. The E-Cell boasts its electric prowess with "AMG lumilectric magno" paint (judges also would've also accepted "Wilson tennis ball"). The ten-spoke wheels are staggered 19-inch front and 20-inch rear, wearing 265/35 and 295/30 rubber, respectively.