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

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