You can also do the same thing with a flash off camera by radio slaving it. You'll have to shoot with the flash in manual mode and have a good idea where the car will be, but you will get some interesting lighting affects. Remember, this was shot in bright light in the middle of the day outdoors. These last 2 examples were shot with a wide angle lense (16mm which is 27.2mm with digital cropping) pretty close. Example: