I've always thought the most ****** thing would be to get a school bus and put 2 15"s on each chair so there would be 48 15"s in all.
Imagine if they were DC Level 5 15"s on 4500rms!
You could easily get 220,000RMS in that.
Under each chair would be 6 batteries and then 1 amp.
48 - DC Audio Level 5 15" subs
144 - Batteries
24 - DC Audio 9.0k amps
But I can't even imagine the wiring for that... that's not even counting the speaker upgrades!
So It's either Bass Bus or Super Car...for the price.