At the time of writing, the current land speed record for a human-powered vehicle (HPV) is 89.6 miles per hour (mph), and this is primarily achieved by improved aerodynamics. Essentially, this HPV is a fair recumbent bicycle. However, the speed has come at cost of visibility, balance, mechanical efficiency, manoeuvrability and thermodynamics—so you would not use this vehicle to go to the shops or race in the Tour de France. However, the important note to take from this phenomenal speed is the role that aerodynamics plays on the speed of the bicycle.