This is very cool, if a bit glitchy right now (probably thanks to HN popularity). I used to this to generate infographics of the rear subframe, diff carrier, and rear suspension of my car and to get detailed specifications on the bushings, suspension members, and other components. Most of the information matches what I already know, and could be really useful if trained specifically on manufacturer/dealer shop manuals to create interactive models of vehicles you can drill to and get part numbers and specifications for any component on a car.