Why has the motor trade changed from mechanics to men in white coats?

I have attached an advert for a motor mechanic in the early 1960s that shows how the motor trade has changed to white coats and computers.
Comes from the time I used to clean cars at a dealer’s as a 9-year-old. Thank you. A bit like the Roy Woods estate agent ads that used to speak the truth. But I don't think the quality is good enough for the paper to use.
Answered by Honest John on

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