We were the first to fart on the bike. The gas, as it exits the backside, creates its own low-pressure system that drags the air in front of the cyclist backwards, thereby decreasing drag and increasing efficiency. Marginally that is.
Brailsford is currently working on a fart-friendly and aerodynamic seat with F1 acclaimed aerodynamicist Adrien Newey. It will be available some time next year. Dave is also working on a book about farting efficiency and effectively, and the foods that help farting so that we can all extract the most out of our rectum. He not only has 30+ years of data on the subject matter, he has a lifetime wealth of knowledge. Marginally that is.