The situation gets pretty ugly, and eventually becomes foot rage.
Road rage incidents are never pretty. They are the kind of moments when human beings are at their worst, and they're made worse by the fact these angry people are also in control of big, heavy machines. But a father and son in China here demonstrate that it can be even worse when a disagreement which started elsewhere is played out on the road. Police in Ma'anshan confirm that the pair had fallen out before even getting into their cars.
The vehicles collide several times before the son jumps out and flees on foot, with the father giving chase. We're not sure what the exact cause was, or how it ended, but we do know they have both been tracked down, and a variety of charges are likely pending.