Has he?
He may have seen an attractive young lady who he thought was saying "hello" to a football celebrity, so he wound down the window only to hear the bloke in the car taking the piss so he lost his temper and spat at the car and for which there is no excuse
But there's nothing in that video which shows it's premeditated. If it was, he would have wound the window down and spat immediately
True to be fair, maybe not premediated then. If I was to be as extreme as everyone else you could say what about if the spit hit the driver in the eye and he crashed. I will be labelled silly though but the over reaction to the driver isn't. Funny that.