The definition of "Redundancy"

This morning I drove almost all the way into work next to a guy smoking in his car with the windows up. I have a 35 minute drive. It was a chain smoking marathon. I was so amazed, I became the jerk who drives right next to the car in the right lane going the same speed. I couldn't stop watching the train wreck! So is every one cigarette equivalent to 3 in those conditions? It had to be why, because it is a beautiful day out, so there's no reason not to have the window at least cracked a bit. And what does that car smell like inside? How far away can you smell that guy when he's walking down the street? I can't stop thinking about what this guy's lungs must look like. Yikes.