Velomobiles will be part of the Isle of Man Cycle Challenge for the first time next month.
The contraptions are either trikes or quads - contained in an aerodynamic shell.
Ian Perry, of the British Human Powered Vehicle Club - who has signed up for the event - says his velomobile could hit up to 80mph on the circuit.
The annual event will take place on the TT course on September 22.
Framework of new Sea Services Agreement ready, says minister
Attorney General says he's stepping down
Road closures in two towns for running event this week
Six weekend ferry crossings could face disruption
President of Tynwald announces retirement
Police close Mountain road
Fuel firm says "fingers crossed" for calmer energy costs
Ring doorbells will need data protection registration - but shouldn't cost you money