I'm not recommending you should do this, but some people in environmentalist groups used to spray expanding foam (available at Lowe's or Home Depot) up into the tailpipes of these sort of vehicles.
Little men and their big trucks. They get on my ass and try to intimidate me as I go to work every morning. Gas prices are going up and they'll be hurtin' pretty soon.
I gave some to my brother before I went overseas and he kept it for me until I got back a year or so later. I was hoping he'd smoke it, but his wife probably wouldn't let him. It was ok, but not real good.
If you let these people get to you, they've won. Some of these things you have some control over, but there's not much you can do for some of the other stuff. Move on with your life.
I spent a Christmas in Saudi Arabia (Log Base Alpha) during Operation Desert Shield. A few weeks later it would become Operation Desert Storm. It was kind of a depressing Christmas.