1. Vehicle Jump for More Vehicles 
Car Crushers 2 already has a vehicle-jumping mechanic through the Turbo Engine gamepass, which allows players to control their vehicles in mid-air.
My suggestion is to make vehicle jumping available as a separate feature for more vehicles, even without requiring the Turbo Engine gamepass. For example, pressing SPACE could make compatible vehicles jump, while the existing Turbo Engine gamepass could retain its special ability to control vehicles in mid-air.
This would give more players the opportunity to enjoy jumping and performing stunts without removing the unique benefits of the existing gamepass.
I think this could make driving more fun while keeping the Turbo Engine gamepass special!