Well as a little experiment, I decided to write a simple navigational automated test that takes the JAVA WebDriver libraries but manipulates the objects in Ruby (which goes through all the links on my mobile site @ http://barryteoh.com/). This uses the iPhone Driver as well, so yes I actually wrote an automated test which drives the iPhone (it is actually pretty cool to watch!).
If I can somehow get it posted to YouTube I will do this. (Edit: Youtube video is here)
Anyway, the code is up on GitHub which you can also clone using the GIT repo git://gist.github.com/294392.git
Oh and hey…. I even noticed it runs while the iPhone is locked (something which most commercial tools fails to do!)