Another one. We once had to get a solar car inspected by the state for registration. They needed to hook up a tube to the exhaust for an emissions test. We just pointed them to the battery's cooling exhaust.

Another solar car, a police officer just came out to inspect it like a "kit car". He asked, "It has 4 wheels, right?" And we were like, "yeah for sure, if you count the steering wheel." And he went ahead and checked the box.