Thats y u should always carry protection in the boot
I only had an experience when i went infront of this guy to cross through the lanes, to the right lane from the sidestreet because i had to turn right right away. When i was waiting for traffic to clear the guy stops in the middle of the road and starts going spastic. I turned on my hazard lights, got out of the car, went to the boot and bulled out Bluey (my good old crow bar) went towards him and his car. (im scary when i go spastic) Once he saw me coming towards him with a crow bar i dont think he wanted to stick around so he drove away.