I have an idea that might work for you. Have multiple car engines all set at a low hp. Make each one on a different action group. For each group activated, the car gains hp. This isnt a very accurate representation of gears, but it might work.

@Assassin23446 He means that this is the third forum you have made about this topic today. People, including myself, see this as spam, and covers up the other posts with this one.

What do you mean

Please do not spam the forums about this.