>all of them
Noted!
>shift the level design to be doable with player's current momentum and position
That was originally the case, while the speed was constant, lol. I'm working to get there again. Thought of a L4D style director too, that would make the game more or less intense periodically based on how you play.
>As in the car making sound while player inputs direction change
I think I get what you mean.