We already know from our own experience that the Tesla Model S is a driver's car, with acceleration and handling you wouldn't expect from a big and quiet luxury sedan. There's still nothing like a drag race to help settle the matter. Automobile has pitted the upscale EV against one of its more conspicuous rivals, BMW's M5, with performance results that might surprise those who would expect a 500HP, twin-turbo V8 to regularly come out on top. Whi