If your goal is to power the car while driving, even 100% efficient solar cells wouldn't be enough, as there simply isn't enough surface area to gather enough e

If your goal is to power the car while driving, even 100% efficient solar cells wouldn't be enough, as there simply isn't enough surface area to gather enough energy to power a normal car doing normal driving. If your goal is to leave the car sitting charging in the sun all day, that's a bit more practical, but I believe there aren't yet any production vehicles like that yet: https://en.wikipedia.org/wiki/Solar_car https://en.wikipedia.org/wiki/Solar_car