It was developed by students from the University of Liverpool in collaboration with experts from various fields. The ARION1 is a fully enclosed, human-powered vehicle designed for speed records.
In 2015, at the World Human Powered Speed Challenge in Battle Mountain, Nevada, the ARION1 achieved a top speed of 85.71 miles per hour (137.9 kilometers per hour), setting a new world record for the fastest bicycle. The bike's streamlined shape and aerodynamic design contribute to its impressive speed.
Please note that records and technological advancements can change over time, and there may be newer and faster bicycles that have been developed since my last update. I would recommend checking the latest sources, records, and news for the most up-to-date information on the fastest bicycles.