Here is an evolved car controller navigating a rather difficult track. I usually do worse than the controller does when I try to drive that track myself, frequently colliding with walls and having to back up and try again. Note that it seems impossible to evolve a controller for this track from scratch, instead I had to start from a controller that was previously evolved to drive several easier tracks. Evolution had to progress in an incremental fashion.
For more on this, read my previous post on evolutionary car racing.