Hi,
the Col. Mario de Bernardi converted his idea into a real rotorcraft,he designed the
Partenavia P.53 Aeroscooter,and followed it by a two seat version,the M.d.B 02
and also called Aeroscooter,but without two rotor blade.
https://en.wikipedia.org/wiki/Partenavia_Aeroscooter
https://en.wikipedia.org/wiki/De_Bernardi_M.d.B._02_Aeroscooter