Since it's using a "lever" it should be a provably fair right? In other words, it's like a slot machine but multiple players can play at the same time, a player vs player mode. The problem with that kind of betting is how fair it is. There is no way we can verify if all players on that specific room is a real human and not a robot. The reason also why we only see a few kinds of P2P gambling games.
The idea is good but I will only consider playing on that site if they are already well-established and reputable.
So here's the purpose?
For a new site, I doubt they will give you a credit for that idea. I think your idea is not new. It's just that you used the "road" as an example.