It would have been better if the page defined "vehicle" since people's definitions may vary. The one I used was basically "Something used to carry people or goo

It would have been better if the page defined "vehicle" since people's definitions may vary. The one I used was basically "Something used to carry people or goods". That meant that a toy car wasn't a vehicle, only a representation of one, but even a toy car could conceivably be made to carry something else at which point it would become a vehicle. I also struggled a bit with the disabled tank, since it's clearly designed for the transport of people, but while it's non-functional it couldn't fill that role. A car that's parked is also incapable of transporting people, but I think most people would argue the rule was still being violated by its presence.