Designer Marco Mattia Cristofori of the German 3D printer manufacturer BigRep, rides his nearly completely 3D printed e-motorcycle NERA, at the airfield Tempelhof in Berlin, Germany, December 3, 2018.(Photo/Agencies)
Designer Marco Mattia Cristofori of the German 3D printer manufacturer BigRep, checks a printed wheel of his nearly completely 3D printed e-motorcycle NERA in Berlin, Germany, December 3, 2018.(Photo/Agencies)
Designer Marco Mattia Cristofori of the German 3D printer manufacturer BigRep, stands with his nearly completely 3D printed e-motorcycle NERA, at the airfield Tempelhof in Berlin, Germany, December 3, 2018.(Photo/Agencies)
A 3D printer of manufacturer BigRep, which developed the nearly completely 3D printed e-motorcycle NERA, is pictured in Berlin, Germany, December 3, 2018. (Photo/Agencies)
