I was stuck in traffic today. I had my windows down since my A/C doesn't work. So I'm in the right lane sitting behind a few cars at a traffic light. To my left is a Ford F-250 Turbo Diesel. Light turns green and the guy nails the gas pedal. Nice big black cloud of soot flies into my face and I'm choking and blinded temporarily. I've noticed that most trucks have their exhausts aimed out towards the passenger side. Seriously, WTF?!