Implement and expose a special event for all or most vehicles. When playing with the keyboard and driving a car for example, pressing the braking button will negate the acceleration button and the car will do nothing. However on controller this behavior seems to be slightly different as the acceleration input wins and the vehicle starts to accelerate. That behavior should be aligned with the keyboard input behavior. Furthermore all vehicles could have their own kind of animation during this input. Cars and bikes for example could perform a burnout while remaining on the same spot. Other vehicles could perform another appropriate idle animation.
This should be exposed as a general vehicle event. It would provide yet another form of input while a player operates the vehicle besides the requested Honk event.
Having a starting and ending signals for burnout / idle events would be great. Everything should be exposed in verse.
To sum up: Press ACCELERATION + BRAKE to produce this event while standing still with your vehicle.