Cars the Game: Radiator Springs Grand Prix without the accelerator button 

I randomly thought of doing this for some reason. The strategy is definitely to boost while you can, and try to make the opponents crash into you so they can re-enact the ending of the first movie to you. I doubt this would be possible on a brand new save file, due to the fact that you can't boost at the start. Even if you tried to do this on a completed save file, I tried one of the last chapter races, and it's definitely not possible. It probably wouldn't be too far into the game until the racers got difficult enough that victory was essentially impossible. Also, this is on the easiest difficulty so I doubt the harder difficulties would be possible either