Will an electrobike take you home when you are blind drunk? What do we do when you run out of charge on your electrobike? what happens when there is a blackout? I don't think you've thought through all the problems properly.
Improperly maintained cars make me almost as sad as improperly maintained horses. We destroy billions of dollars worth of cars each year collectively because of people not affording/otherwise failing to do maintenance. On the flip side, thoroughly maintaining them would tend to result in a glut of older, less efficient cars, so it's not a cut and dry issue.