DeWalt has a construction grade ghetto blaster available.
http://www.homedepot.ca/product/radio-charger/922430Sounds good. Not only does it have up to 78% better sound, the first reviewer seems to have purchased it primarily to drown out their neighbor's systems.
The competing RIDGID radio has a compartment to store & protect an iPod or other sound source, but reviews suggest that neither the sound nor the charger are very good.
http://www.homedepot.ca/product/ridgid-18v-jobsite-radio-generation-2/924829One of these Bose systems might do the job with the addition of a couple of wheels:
http://www.bose.com/controller?url=/shop_online/speakers/portable_amplification_systems/index.jsp... but as long as we're adding wheels, I bet there'll be an M80 variant of the AxiomPlay if you wait a bit. Add metal corners and a couple of solar panels and you'd be set.
Perfect for tailgating too.