Customizing your car in the early 2000s was the thing to do and one of the most expensive fads of this time were custom subwoofer boxes. These units generally take up the entire trunk and featured things like neon lighting and glass coverings. While customizing your sound system to this degree can be cool, you lost all but a small amount of trunk space.
Subwoofer boxes are still around but their popularity is nowhere near what it once was. Having your car booming at the stoplight turned out to be a bad idea. Many of these drivers ended up with hefty tickets for noise violations, so all of a sudden the subwoofer boxes had to go.