His name is Nakai, so you know.
When traveling, Nakai is restrained in the back seat of the car. Every time a large vehicle (think anything but a regular car) goes past in the opposite direction, he "attacks" it by lunging at the window while barking and snarling. The only purpose this really serves is to smash his nose into the window, or the wall of the car. He doesn't do this to vehicles traveling *alongside* our car, just ones going in the opposite direction, and normally never a car, but only trucks, jeeps, minivans, etc.
It would seem that this would be painful enough that he would just stop on his own, but he doesn't. Is there anything I can do to correct this behavior? He does travel by car often, and well on all other accounts.
Thanx for your help.

