According to My Modern Met, illustrator Nikita Golubev – known around Facebook and Instagram as ProBoyNick – recently started an ongoing guerrilla street art project wherein he draws amazing pictures on cars. Using mud, road grime, and soot as his pigments and parked cars and trucks as his canvas, Golubev has turned Moscow into a rolling, if unorthodox, installation. From the article, and what he's posted to Instagram, it looks like his primary targets are box vans and Sprinters. That makes sense seeing as how they have a lot of broad, flat surfaces to work with. He has, however, used smaller vehicles like a dark blue BMW on which he drew a pretty good shark.
There's no word on how the owners of these vehicles feel about Golubev's work. On one hand, this kind of thing can really screw up a car's paint job. On the other hand, it certainly brings a little bit of joy to the long, bleak Russian winter, so it can't be all bad.