Why doesn’t every electric car do this?

They’d need a LOT more solar cells (like a 20’ billboard size) to do the job. But, because Aptera is so efficient we don’t need so many cells. It’s a great example of the engineering karma of an efficiency focused design. We use a lot less power to drive, so it takes a lot less power to charge, so much so that an efficient solar panel covering just the top of our vehicle can provide for the driving needs of most Americans.