Do you ever look at your cars engine?
I was thinking about roadside repairs today - no thanks, we used to rip engines out and work them over (at home), headers, cams, 4 barrell carbs. I remember we used to carry spares around with us, rods for the 350 cause at high RPM every once in a while she would bend one. We had the rocker off and changed them in the street in 10 mins. Father and son could look under the hood together and understand what they were looking at. They were the best of times.
I'm afraid to look under the hood of a new car, its all plastic and clean, you could serve food off the engine of most new cars. Not much wiring and if the things ever break you need to get them towed. If your looking under at a modern car engine today your probably wearing a white lab coat and gloves right?