Originally Posted by budster
As noted above, pollution levels are actually
higher inside cars than out where you're cycling.
Much higher --
http://www.things.org/~jym/greenpeac...side-cars.html
I know that doesn't
seem true, but in fact it is. So if you're going to get a Darth Vader breathing mask, wear it when you drive, because that's when you're sucking in the nasties. Better yet would be to stop driving altogether....
You also have to consider that when you are cycling you are taking in a lot more air than just sitting in a car. So even if the air is less polluted outside than inside a car, the extra amount of that pollution you are taking in from breathing hevily probably evens out the pollution level.