I am surprised by the numbers. I thought cyclists would inhale more pollutants. I was sitting behind a filthy Volvo once and felt like I was going to pass out. It didn't help that I was sucking in air at the time. I pisses me off to know that we are out there trying to be healthy and strong, and yet we have to suck in fumes while sitting at traffic lights behind filthy cars. In the summer it feels like the temperature goes up 10 degrees when I am sitting at a light. Hopefully, I'll get in a few more good rides before I die of lung cancer.