Its a really good game but there is a lot of stuff missing that would make it better.
Here is a list of stuff you should add Trailmakers.
1. add more sirens types like police or fire truck sirens.
2. add bombs like nukes that will launch your car away.
3. add tornado sirens
4. Add new wheels and rims.
5. Add more exhaust types
6. Add more engines like A diesal with a turbo
7. Add more lights like a police light bar
8. Add more maps (levels) like a forest or offroad map!
If you could add those I would be happy but in general this game is good!