I wonder if such a thing exists? I'd happily lend my (ok, fairly limited) knowledge and/or tools to a chap nearby who was working on his car/bike but he won't know that unless he knows me personally.
There would probably have to be a way to make money from the site but I reckon it would be quite easy for someone who knows internets to set up...
I've considered using Freecycle along these lines but our moderator is a short-arsed nazi who won't allow 'can I borrow a...' posts.
Thoughts?
Si