Tutorial about Automated Cars Animation.

Hi ! I have finally written a tutorial about the method that I found some months ago for automated cars animation. It is available here in PDF format, with a blend file provided.
http://3d-synthesis.com/tutorials/Cars_Animation_Tutorial.pdf
http://3d-synthesis.com/blender_miscellaneous/Cars_Autodrive.blend
I hope that it will be understandable, ant that you will find it usefull.
Further refinements will be probably added if I have enough time, like the automatic animation of the character driving the car, by linking his hands to the steering wheel !
I plan also to make an other tutorial for motorcyles, but it will more difficult, and I have few time, so wait and see !
I had put it in the Animation section, but as the title didn’t say that it was tutorial, there were very few readers.
Happy New Year !
Philippe.