Amie Slavin's 2012 project 'SoundSpiral' packs a huge surround setup into this portable building. Check the via link for more.

German DJ Nik Nowak created a special rig for his gigs. Fitting a sound system in the chassis, a control module in the "cockpit," and put the whole thing on tractor treads. If need be, he can even have the whole rig lift up and point the speakers towards the audience. The Autobots's Shockwave would be proud.

Via: Break http://www.break.com/pictures/dj-donkey-bass1914365.html