Yeah, I know I know, all I'm saying is that this seems to be a very noble, well-equipped sort of karting track. So if they even have special karts for foot free driving, they might just as easily have one optimized for one-handed driving.
I can't see how this would help Robert in any way, why should he use hand controls for acceleration and braking if he has full use of his legs?
Besides, do we know for sure that he has full use of his legs again? I'm not saying he hasn't, but since we don't hear anything reliable from him, we actually can only hope that as well.