No see to put your car in reverse you need to throw your arm over the passenger seat and look over your shoulder, activating the pressure sensor in the back of the passenger headrest, and the face recognition sensor in the rear window.
I don't know if you're being sarcastic or not, but this is a terrible idea. A family is driving on the highway. Kids are fighting in the back seat. The mother, who is driving, turns her head and tells them to stop. The car is rear-ended by a dump truck, and all three are dead.
I have to assume modern auto transmissions have computer lockouts to prevent you from money-shifting it into R while at speed, don't they? I'm thinking like modern dial-a-shift where you aren't directly manipulating the transmission with the shifter.
I've never tried to test it cause I don't like horribly expensive mechanical noises, but yeah.