How come evolution never developed the wheel?

Because its a bad idea, you need roads and level sturdy terrain for wheels to fully deliver their potential. You would need heavy regeneration abilities on your wheels, because of tare out doing bends, cars have heavy duty rubber wheels, reinforced whit steel wire and you still need to switch them out, how well do you think skin or bone would fair. Then there is the whole problem of how do you keep the wheeles supplied with blood, any vains would just tare out after one spin.....