Going out on a limb and calling this an April 1 joke - Colnago's flying bike

Well, why not? A flying bike? Sure! If anyone could design one it would've been Da Vinci. Why not have Colnago build it?

Tech Exclusive: Colnago Developing Da Vinci's Flying Bike | Cyclingnews.com

Revolutionary transportation more than just a pipe dream

Colnago founder and managing director Ernesto Colnago sensationally revealed that the Italian bike manufacturer has spent the last few years working towards the production of a prototype of a flying bicycle that is partly based on drawings done by Leonardo Da Vinci in the 15th century.

Oh yeah, and this gossip piece, too. Any more?