The problem is that the nation's grease monkeys really haven't been trained on these new modalities
Back when I read newspapers, I read that *shade tree mechanics* were a problem that needed to be dealt with since they figured out ways to circumvent the emissions controls- (air pumps, etc) - at the time I couldn't conceive how "they" could do that- voila! computers and degree of difficulty in even getting to an engine- anecdote: I was a pretty fair "shade tree mechanic" and could fix just about anything, today I don't even like looking under a hood because you can't see the engine anyway. BUT, computer nerds sell computer programs to make the engines perform better

- and thanks to computers and electronic timing and fuel injection, better materials for components and CNC machines, (oh, I might add, CNC machines are pretty much machinist robots) engines are much more efficient. Efficiency is also key to performance improvement-
I have a good buddy who is a professional "grease monkey" who has been in business for a long time (he's 54 years old) and makes a damn good living- his son (21 or so) doesn't like working on cars so the business will die when he hangs up his tools- anyway, he buys the tools he needs to work on new cars and subscribes to an internet service for hints and procedures for diagnosing and has a pretty nifty hand held scanner made by Snap-On-
My point(s) being; it ain't, nor will it be, all doom and gloom and there is opportunity for those who choose to use it- there will always be creative types and there will always be repairmen- creative types keep repairmen in business and keep rule writers in a job- sadly, (or not depending on perspective) rule writers never seem to learn there are people who actually enjoy bending or circumventing or ignoring rules-
forget what their rules say, you know you win, when, you live life your own way