What I liked: I loved the tension that comes with not being in control. I was always a little nervous that the driver would make the wrong turn. The rage meter was a great addition that gave you even less control and made the few choices you had even more important.
What I would suggest: My main complaint was how you would typically go left, than right, than left, than right, and so on. I think more complex maps could remedy this. Or perhaps a key you need to pick up before reaching the exit. I really liked Dominik_Dec's suggestion of using random words rather than left/right.