While we may all have our own opinions on gas prices, global warming, and the safety of large vehicles, I think we can all agree that trucks and SUVs would be a lot more acceptable if they dispensed draught beer from their tailpipes. Until some genius develops an engine that runs on the bubbling gas emitted by fermenting barley, the "Party-A-CarGo" remains our best option. Place the steel and aluminum box on your tail hitch, slap in a standard beer keg, turn the speakers to any type of rock that you please and kick back in your most scenic parking lot for up to 12 hours.
The only thing missing is the autopilot.
The Party-A-CarGo tail gating system is available in a variety of configurations, including models with TVs or iPod docks integrated into the sound system. The actual ordering page at the manufacturer's site is down, but according to TailgatingIdeas.com – who sells the Party-A-CarGo with the charming line "If you can’t round up some random poon with this on the back of your vehicle, you will probably remain celibate for the rest of your life." — these things cost around $3,000, give or take a few hundred depending on how you configure the stereo.
Product Page [PartyACargo.com]