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Computers have ruined everything about cars - I used to be able to just nip out to the local scrappie to replace a busted 1980 Ford Cortina headlight - now I have to get some engineer to tell my car that it has a new headlight using expensive software before it can assume it's head lighting duties. The mechanic has to be approved by the car manufacturer's appointed maintenance arm, after paying for a course on how to use the software. Even after all that some red light will fire up on the dash inexplicably because of software bugs. Like I said, ruined is the modern car.