Overall, the rules are clear. However, there's a lot going on, with slightly different roles depending on whether you are leading or following. A summary of play would probably help here. Essentially, you're previewing the sections that follow -- each round has a series of tricks in it, you have special powers based on whether you're leading or following at the moment, and the road conditions will change sometime around the sixth trick.
-- What happens with the steering wheel? It points out one person as the lead player at the beginning of the game but doesn't seem to play a role after. Does it change hands based on who is the leader at any given moment?