What late model accessories do you wish your old car had?

Some of em had the "econo-gauge" on it
Basically a vacuum gauge whose needle went from green to red, based on engine vacuum
I had a '76 Dart with the passenger side fender mount turn signal indicator that would light up when you had your foot in it. Some GM products had three lights on the drivers fender edge. Red, yellow and green. Rumors have it that GM dropped that feature due to it being a driver distraction.
Peace, Love and Rockin Mopars.