The little cloud of smoke/dust that appears just below the doors of the van looks suspect, especially when watched frame-by-frame.


Unless... perhaps we are seeing dust/dirt knocked from the motorcycle itself. After all, just a few seconds earlier he was accelerating hard, spinning that great knobby back wheel and getting dirt all over everything. Not surprising that an impact like that would knock some of it loose. Also, assuming they used the van to haul the motorcycle to the site, there could well be dirt inside the van that would be disturbed when the motorcycle landed.

tanstaafl.