Vintage muscle cars...

I grew up in the days of the 1969 Roadrunner and the Super Bee that had the huge rear spoilers that when you pushed the gas pedal you could not only feel the engine but could watch the gas gauge go down. Now of course life has changed where you think about horsepower but fuel economy is much more of a focus. However, items like spoilers and NOS are still popular with some of the same crowd that had they lived in our time would have been called "muscle heads".