Originally Posted by
wphamilton
Same reasons as velomobiles, only low-tech. Aerodynamic advantage and protection from weather. More comfortable, convenient, faster ride.
these are all valid reasons, but if i'm not mistaken, it has an open roof. not sure how it's more comfortable or convenient with a door, and limited visibility. But is it really more aerodynamic? it lowers your drag coefficient above the wheel axles, but adds to the cross sectional area significantly.