They are reported to travel at speeds of 100 km/h plus - so fast in fact they some get fitted with parachutes for brakes.

And they have arrived in Albany - it is the velo-mobile - a bicycle in an aerodymanic capsule.

Albany local John Lewis is believed to be the first in WA to have one and despite not cracking the 100 km/h mark yet - is having a load of fun.

Listen here as he chats with the ABC's Andrew Collins