This made me wonder: why don't we see real cars using this method?
1) 1 engine/motor is more efficient to manufacture 2) 1 engine means one point of failure 3) Early engines were not small or light enough to mount 4 of them on a vehicle and power to weight was an important aspect for those early vehicles, now it's still relevant for energy efficiency 4) Distributing energy to 2 or 4 wheels from a single point is very efficient mechanically, so there's not much lost in the process to heat, sound etc. So, why not? 5) Independent control often means more friction and wear because the wheels don't need to turn on their axis to make the vehicle turn, they just slow their rotation (causing friction). Regular cars still create friction when they turn but less.
If the same is to be done with different rotation speed of wheels, then the friction force is the only force to push the mass to the left. And it needs to be much higher (with higher velocity even more higher).
So it's all about the mass and velocity and friction.