You can't do it with cars, either. Solar-powered cars are definitely a thing [1], but they're purely research vehicles. At 20% efficiency, PV cells will never p

You can't do it with cars, either. Solar-powered cars are definitely a thing [1], but they're purely research vehicles. At 20% efficiency, PV cells will never power a practical car any consumer would want to buy. Nor would such cars likely be road-worthy on normal highways. The engineering and physics challenges are even tougher for passenger aircraft. It ain't gonna happen. [1] https://en.wikipedia.org/wiki/Sunraycer https://en.wikipedia.org/wiki/Sunraycer