There are some true idiots on the road, I dont think it was intentional. Old people do stuff like that, hell my aunt almost did something like that. She pulled too far into an intersection at a red light, and put it in reverse to back up a bit. didn't put it back in drive though. I was riding shotgun, and just waited... she never realized she was in reverse. When I could see the light for cross traffic turn yellow, I reached down and put her car back in drive before she got a chance to hit the gas and back into the car behind (who was equally clueless for pulling up right behind a car with its reverse lights on).