It seems like most drivers record their driving with GoPros so it would be awesome if there were a GoPro option to record your games/races from a selectable fixed point on your car, similar to a GoPro. You could record videos like Japanese Touge drifting, etc.
Otherwise it would be nice if you could just record in-game instead of going through something like Upload, or just having an option to save game replays in the way that games like CoD have done it.