Skateboard tricks but with cars! A colleague of mine has been working on this game for a while, streaming his progress on Twitch. No firm release date but it can be wishlisted on Steam though.
Become a master of physics by launching your car into the air, performing kickflips, and grinding rails. Complete missions to unlock levels and cosmetics, practice tricks until perfection, or just goof around with friends.
Back when I played rocket league I often thought about the similarities between that and skateboarding. It sounds like a great idea for a game :)