I'm not sure what may have been added to tap water, but recently there has been a spate of car burnings - cars stolen, then set alight a short time later. I don't know if there are movies that model this kind of stupidity, nor whether social media has a part to play.

But burning things, especially cars, is very much in vogue. Sure, this is clearly an attempt to defeat forensics, to nullify the tell-tale way people can leave evidence at the scene of a crime. Removing the genetic fingerprints.

In his poem, The Burning Truck, Les Murray describes how the town's 'wild boys' chase a driverless burning truck through the streets,

'And as they followed, cheering, on it crept,
windshield melting now, canopy-frame a cage
torn by gorillas of flame, and it kept on
over the tramlines, past the church, on past
the last lit windows, and then out of the world
with its disciples.'

I don't think the current crop of 'wild boys' would have read Murray, though I could be wrong.