Burning Man is a parade of art installations and wackiness. Picture a comic convention in the desert with less comics, clothing, and inhibitions. It’s not so surprising that a Dalek car would show up or that someone would don Stormtrooper armor and guard it. I’m guessing it would be easier to exterminate this Dalek rather than cleaning out all the sound.
See the Dalek car in action in the video after the break.