Sometimes you have to prove just how fast these bikes can go. If you are one of those people you probably are in (or should be in) the BHPC.
Their events cover all sorts of machines at a variety of locations - see their web for details.
They have a lively forum and quarterly magazine.
You may recognise some names...
HPV World Championships... more interesting than the Olympics
The HPV World Championships took place on the fantastic race track at Fowlmead Country Park, near Deal in Kent, over the weekend of 9th/10th June 2012.www.bhpc.org.uk/home
Facebook page Human Powered Vehicle Championships
Website of the HPV World Championships