on the subject of 4d driving, here is an interesting track. it is designed for porsche carrera. note the HIG file is a joke.

have fun

because of the air acceleration bug or maybe i'm too sim oriented, staying off the gas in the air seems like not cheating

< 5:30 is surely possible even without cheating

wat

Quote from DeadWolfBones :

wat

First I thought the same. Thread title didn't explain anything, but then I realized 4d driving = the game of Stunts. :|

Stunts was great game and I think I know what bug you mean...
sometimes engine would "get stuck" at highest RPM and then the car would never slow down, no matter what terrain.