San Francisco Ponders: Could Bike Lanes Cause Pollution? - WSJ.com

Mr. Anderson disagrees. Cars always will vastly outnumber bikes, he reasons, so allotting more street space to cyclists could cause more traffic jams, more idling and more pollution. Mr. Anderson says the city has been blinded by political correctness. It's an "attempt by the anti-car fanatics to screw up our traffic on behalf of the bicycle fantasy," he wrote in his blog this month.