Thanks! I'm curious - did you just find the site on Google? Over the past two months I've re-mastered the old illustrations with a few filters and the difference is incredible. There's still a little more to do but I'm pleased you find it useful. The next step is to update the iOS app with new versions of the pics.
Here's a comparison of the pics:
Old - http://www.howacarworks.com/images/846/leaf-spring-suspensio... New - http://www.howacarworks.com/illustration/1333/leaf-spring-su...
Yes! It was the top result for 'car damper working' and a bunch of other search terms.
Dated or not, it is definitely a great place to get some fundamentals straight. So I took the liberty of posting it on HN this morning.
Thanks for the great work!