Have you got a spare half hour or so for a meditative contemplation of ‘the way things go’?
It starts out like so many other Rube Goldbergish assemblages you’ve seen on Youtube but becomes chemical and pyrotechnic. Solids, liquids and gases strung together in mundane and inventive ways. Very much a metaphor for the mix of intended and unintended consequences, of the predictable and the surprising, that drives the world. Oh, and lots of car tires.