Pollution Study in Commuters, Test subjects required

Blah blah blah...Increased AM carbon in cyclists is due, in part, to the longer time taken to travel to work and
exposure to high local concentrations of BC...etc

I have never had a job where it takes me longer to ride than to use public transport / car, and I would wager that is the case for the vast majority of cyclists.

Smells like bollocks to me.