I have to agree with Devnant here, the product really feels unfinished, tough I can see you guys are trying. I just now discovered about the vagueness of the vehicles, plus I agree with some of the other members that posted here that vehicles are a very important asset of the game (not only chase related, but in general: means of locomotion and travel are an essential piece of a RPG).
I would very much like to see an update with better features for vehicles and some upgrades for the reference manual, as pointed out by Devnant.