Nah, I can drive in real life, and I've often thought about how much more awesome it would be if I could just ride Crobat, or Lapras, or Bliztel somewhere. It does take away from the adventure some in my eyes. Penn and Teller made what was supposed to be the most boring video game ever conceived, you're on a straight road in the desert, driving a bus that drifts to the left, and the goal is to see how long you can stay awake playing this. I don't think it'd be that bad, but the long straight routes needed to make cars practical would kind of kill the meandering adventure mood.