As you say "decades" I did a cursory search for a video (assuming perhaps at some point during that time someone thought to make one.) I found this interesting video:
but would certainly like to see an F1 care drive literally upside-down (normal to horizontal) if you have anything like that. I just searched for a second on YouTube.
The whole "driving upside down" thing is mostly theoretical because although the aerodynamics might allow it, none of the rest of the car is designed to work upside down without some modifications:
I think the majority of such claims are misunderstandings of "generates downforce equal to its own weight" which is most certainly not enough to drive upside down.
The only case of a manufacturer actually wanting to perform a test was Gumpert with Apollo, according to Top Gear UK (take it FWIW).
I think the fuel and oil are gravity fed, or aren't under enough pressure to work upside-down.
I love watching the cars as they come out of a slow corner, they look like they are prancing on their toes, then as they speed up they 'suck' down to the ground... really cool
I heard that several types of race cars could stay upside down at 100km/h. In 2000 F1 was reaching 300km/h on most circuits, less now. I guess that means it could be upside down on a higher gravity planet.
