People in Movies are Stupid - Part 2

Have you ever watched a movie where someone is stopped at a railroad track, waiting for the on-coming train, and someone drives up behind them and pushes them onto the tracks? Why is it that they always stomp on the brakes and throw the car into reverse? They, of course, never successfully manage to push the car behind them backwards before the train demolishes them into an unrecognizable heap. Did it ever occur to them to simply hit the gas and drive across the tracks?