2: Rear Window Louvers
Whether it was a Chrysler Laser or a Chevrolet Camaro, you’ve probably noticed rear window louvers. The Louvers were geared toward sports cars from that era. They didn’t do anything particular for the performance; instead, it was more of an exterior aesthetic. Nevertheless, there were plenty of drivers who had to have rear window louvers (via LS1 GTO).
Nowadays, you’ll see them every so often on a vehicle. For that real 1990s style, you can get an old sports car that still has them. The worst thing about rear window louvers is they impede vision. Creating a blind spot right in the rear-view mirror isn’t the smartest thing to do.