At the Touchless Car Wash on Divisadero & Oak Streets, the attendants will gladly pump your fuel free of charge, but it will cost you to have them scrub all that post-Burning Man Playa residue off of your art car, RV or repurposed school bus.
That easy-to-miss sign, which includes a prehistoric drawing of a campfire and a caveman wielding a spear for some reason, advertises $55 car washes for "Burning Man Vehicles". That price is, as you can see, more than double the price of their cheapest $22 rinse. Anyhow, Burners in need of a cleanup should remember to bring real American currency. That barter thing doesn't work so well back here in the real world where your neighbors drive electric blue Aston Martins.
Hat tip: Haighteration