You know, we've all wanted to do this, see how long it takes for the car to get to 60 right up close to the dashboard like all those videos on youtube, the devs or someone needs to add this, it would probably be very simple to add. example:
I know for sure you could even make it a selectable part, although which slot to put it in? (Editing the main jbeam to add a slot isn't a good idea if it's a mod.)