Looked through here a bit and I don’t think it’s been brought up yet. If you try to examine a vehicle while standing on board it, it brings up the message ‘You can’t do that while on board.’ However, if you drop an object in any vehicle tile, then examine that tile, if you refuse to pick up the object, it brings you straight to the vehicle menu. You can also access the menu by examining the outer frame of the vehicle while standing inside it. I’m relatively sure the former is a bug, not so sure about the latter.