I like to play with dynamic cars and recently came up with a method where they could drive upside down without falling off.
See if you can work out what's going on - answer tomorrow 😀
Yes, but that just makes stuff float around - so I also gave each car a gravity object as a child, with a box fall-off so the cars' gravity don't affect each other. The gravity field moves with the car.
The car always tries to move in its own negative Y direction until it finds a collider. When it's upside down, it moves up etc.