Oh, I would love to have heard the conversation in which one party agreed to do this, another agreed to have it done, and someone consented to pay for the whole ordeal. It had to have been priceless.
Check this out...you might implode.
Searching through the net, found this site. If high efficiency speakers are your bag, check what these guys are doing. MOST LIKELY, it is going to sound terrible, but all of those guys out there with their "boom cars" complete with four JL 18" subs will probably wet their pants. For those of us who actually care what music sounds like, this'll be a good laugh. www.royaldevice.com/custom3.htm