Perhaps road rage, perhaps trying to take a bad lane change. Although, I thought most North American (with the exception of Ontario) road laws ... it was illegal to make a lane change in intersection.
Car driver felt the pressure alright.
At least the truck seem to be indication, but maybe not looking cuz car don't seem to be in a blind spot, if so that's a bad example of right of weight.
Safety first even if that means the laws be damned. The white car should have braked to avoid the possibility of getting smashed. Personally I make it a habit to not be positioned with any vehicle directly beside me when that's reasonably possible because if nobody is there, then nobody can crash into me