Filipe, would you ever think about making some kind of shifter-kart? You could like shift through the gears by clicking to shift up or your light key to downshift? Like say the kart has 2 gears + reverse, starting out in first gear would get you up to speed but then you'd have to shift eventually to go faster, and you could be able to tell when to shift by the sound of the engine. But you couldn't start out in 2nd gear without it taking a long time to get up to speed. Obviously you would have to downshift to 1st gear to go around tight corners, making it an actual skill to drive. Speedkarting could be much more about racing each other, than worrying about timing jumps and stuff that isn't very realistic. You could have actual circuits and stuff with no ramps or anything fancy, and it could actually be a matter of who's a better driver, not who can go over jumps and ramps the quickest with a go-kart.