I want to have a moving part on my car where I'm able to press a button on the keyboard and have it move up or down, how would I go about doing this? Would I need to do something in Blender or something in one of the random code files? Thanks you. btw I'm not sure if this is the right forum or if this belongs in support.
That would be very complicated. One of the only vehicles I know of that has something like that would be Mythbuster's Cadillac http://www.beamng.com/threads/437-1949-Cadillac-Series-62-Convertible The top goes up or down when you press N which turns the headlights on or off.
It has to do with adding Hydros (much like the ones that control steering) and the value of their bound and rebound. I think on the caddy, the hydros are preset to trigger once N (or headlights turn on) is pressed and the action is set to operate for a few seconds. What do you want to animate?
Not yet supported without some crazy lua mods, which involve changing the game itself. Support coming in the race update i believe.