Now there are pushbikes and there are pushbikes and this could be the world's most expensive example of a two wheeler. Underneath the bonnet where the V12 should be, there are two sets of pedals, operated by two strong cyclists. The shell may be pure supercar but it's actually the Fahrradi Farfall FFX, designed by Austrian artist Hannes Langeder who spent a year and £1.2million on the eco friendly build. Based on the Ferrari FXX, which incidentally comes in around £1million, its only when the stats are compared that you realise that all is not what it seems. The Butterfly Bicycle, as the name translates in English can achieve speeds of tens of miles per hour against the 243mph from the real thing but there's no CO2 emissions, no pollution and its positively healthy.