Astrophysicist? Uhm…I needn’t explain how an explosion engine works, then. Just keep a watch on the easy systems a car depends on. No misteries. No hazards either. I am not a car nut but can assure you that no car has ever failed me in 30 years, old or new…And I may drive a ‘35 blower or an SS100 all as reliable as the latest state of the art Merc. This is quite a pragmatic advise. Sorry there isn’t much emotion in it but so most things are in life…Just a little spot of bother.