This cool innovate shape folding bicycle called STRiDA is a a mark sanders design(MAS DESIGN)
The urban transport has a unique triangular construction, they are compact and portable thank to the quick folding system.
in the designer site you can see a demonstration clip for it`s simplicity of folding system
( just 3 tubes and 3 joints arranged in a triangle. It folds by simply bringing the 3 tubes together to form a wheeled stick)
Made of aluminum, rubber, steel, and plastic. Weight: 20 pounds
if you like them you can order it from the MoMa $800.00