That sounds cool indeed, none here... although there isn't much room in my truck for such a thing either. I suppose if I had a cap on it and the bed loaded with speakers it would fit in nicely, but those days are long gone for me anyway hehe.
Lol, well its never to late to pimp out your car. Maybe something for the kids or even as an adult if you take long trips. Like you said boss, a truck loaded with speakers would be really nice. Especially playing your favorite video game or shooter like call of duty, your car would rumble with the action.