While playing today I had an idea for a power-up. It would apply force down on the car to make it stick to whatever surface it is driving on. This would allow you to drive around outside curves of walls without flying off, travel across rough terrain without bouncing, drive on the ceiling at lower speeds, or just make more controlled turns.
Things like this has been in other racers before. Such as Wipeout Pulse (Mag-Strips) and Mario Kart 8 (Anti-Grav). But in those cases it was part of the track and every player would do it no matter what.
This version is localized to a single vehicle. This would maybe allow you to take a different path you wouldn't have been able to, or to avoid an incoming missile by driving on the wall of an outside curve to block the incoming missile.
I realize something like this has the potential for abuse if the tracks weren't designed for it, but I think it could be interesting.
And if you're having trouble understanding what I mean, look up at the top of the Grip Forum. Looking at that picture of the cars in the tunnel, with this power-up you would be able to dive around the corner on the left wall, not just the right side.