www.opb.org/programs/ofg/videos/view/56-Electric-Drag-Racing
Guy with a 1972 Datsun has installed an electric motor and is busy beating a Corvette, a BMW M3, and others on a drag strip in Oregon. (Looks like A123 was suppling some of his batteries.)
Didn't mention how long the car can cruise assuming he wasn't burning the batteries drag-racing, but it's an interesting story nonetheless.