Note: The only cars that change are the Agency Supercar, Agency SUV, and Agency Truck Cab. The following major changes in performance occur whenever you reach level 4 in your driving status and the car has evolved completely:
The Agency Supercar's horn is replaced with a heavy machine gun. Press B to use it.
The Agency SUV's horn is replaced with a powerful hydraulic system, allowing it to jump. Press B for a short time and release to jump effortlessly.
The Agency Truck Cab's horn is replaced with a powerful nitrous boost that can cause it to plow through anything. Hold B to plow through all who stand in your way.