A tandem, with which one sits after the other, is aerodynamically but dull! With this side-by-side-seated tandem, one can talk well together and exchange kisses during riding! :-*
It took some time figuring out how this bicycle works. I could just see two pedals. Then I realised every pedal is actually two pedals. Better concept than a traditional tandem! Now both of the cyclist can see where they are going!