This is a bit of old news, but still deserves a look. Early in 2012, Washington state Rep. Ed Orcutt emailed a bike shop owner defending a $25 bike tax on many new bicycles. He wrote:
"If I am not mistaken, a cyclists (sic) has an increased heart rate and respiration. That means that the act of riding a bike results in greater emissions of carbon dioxide from the rider. Since CO2 is deemed to be a greenhouse gas and a pollutant, bicyclists are actually polluting when they ride.”
This idea is based on a book called How to Live a Low-Carbon Life, by Chris Goodall. This claim is false. There is a lot of science that shows bikes have a lower carbon footprint than cars.
Orcutt later admitted that he was incorrect.