Car Talk those guys are ledgens!
They do a weekly radio show on NPR (national public radio) in the US.
I urge everyone if you consider yourself a true petrol head to download the podcast. If you have an apple device (iOS) go to your iPod, then more, then podcasts and do a search.
Honestly do it!
[video=youtube;bU9v8xMuMXM]http://www.youtube.com/watch?v=bU9v8xMuMXM[/video]