tailgating on the road

It's unsafe to tailgate while driving and one person learned a lesson the hard way.  He wasn't tailgating another vehicle though; it was a kangaroo.  The slow drive lasted about a half mile when the kangaroo had had enough.  It turned around and decided to fight the car.  Even after the driver managed to get around it, the critter followed and continued to punch the car.  The encounter was caught on a dashcam.  video