The amazing Nautilus Submarine art car.
“The Nautilus” by Five Ton Crane, a San Francisco Bay Area art collective, is a 25 foot long art car inspired by the submarine from 20,000 Leagues Under The Sea. It has a water cannon and a night vision periscope, but its most awesome detail is a 4 foot diameter door with a motorized brass aperture window shade and a squid-themed keyless entry system (video). The door was designed and built by artist Dr. Alan Rorie.
More info on the Nautilus art car website.
Photo taken at the Burning Man 2012 festival (Black Rock Desert, Nevada).