Sure, Mercedes-Benz is building all-electric vehicles for the daily grind, but none can deny the 750-horsepower SLS AMG Electric Drive is by far its most exciting EV. One lucky test-driver -- Chris Harris from YouTube channel DRIVE -- recently had the opportunity to point the overtly shiny beast round a track, and filmed it for his online passengers. He's initially unsure the car will turn petrol-heads on, and talks torque, cockpit lay