It's all-around.

The aircraft industry is behind car industry, (for small planes anyways)

A small Cesna or Piper plane will have technologies that are behind cars,
but reliable. (maybe not as fuel afficient, but trusted, time-tested
technologies will be used.)

I remember one of the planes in our hanger while I was learning Avionics, it
had a small 4-banger Porsche engine driving the propeller. It was a
carburated engine, not fuel injected, and had lots of old-school tech
inside. (analog gauges for everything, etc...

I don't mind (even if I'll really get pissed) getting stuck on a road with
my car's computer dying, or one of the thousand sensor/electronic stuff. I
wouldn't even want to try that on a small plane :)

You *CAN'T* use hazards while parked on clouds :)

Even if I miss old carburated car engines, modern engines are more
fuel-efficient, pollution-free and economical than old muscle car beasts
(even if I miss the pure,brute power).

Don't get me wrong, I used to own a 4-barrel 351C modified to about 400HP
(1979 Heritage T-bird), I'm looking for a M3 bimmer right now.

I do miss the T-Bird, (but in corners, my 1995 Contour will it anytime)
Heck, my 1979 22R 5-speed Celica GT cornered around it :)