If you hold the brake button you will shift into reverse if you're at a standstill. It's not worth it though unless you're online, or have an absolutely massive lead since the time lost by coming to a stop, backing up far enough to get out, then accelerating from a standing start is likely going to be longer (compared to the other racers) than just eating the reset. Especially if you're in a challenge series event as the timing on some of those is absolutely brutal. --- I would, but it violates an axiom I live by. Never do anything phenomenally stupid.