Energy density isn't nearly the as big a problem as lifespan and cost. You have to move some things around, but if you stick the suspension and the engines in t

Energy density isn't nearly the as big a problem as lifespan and cost. You have to move some things around, but if you stick the suspension and the engines in the wheels, there's room for > 500 liters of battery in most cars. Th!nk gets about 150 L in a microcar.