However I think more people are willing to have a go at fixing their computer themselves, than start ripping their engine to bits. Not so sure why this is.
Maybe it's because computer people are viewed as expensive, maybe it's the lack of muck and grease thing or maybe it's because you can tinker with a computer without going to halfords and buying a socket set first :o) <<<<
If you break it you can start over at no cost other than your own time. Not so easy with a car.
-- GT