Put an aerodynamic fairing on the front and a roof to keep out rain and you have the classic electric velomobile, of which there have been variations for 100 ye

Put an aerodynamic fairing on the front and a roof to keep out rain and you have the classic electric velomobile, of which there have been variations for 100 years. Unfortunately, the issue with tricycles is the additional space they take up and their reduced maneuverability. They are hard to use on most extant cycle infrastructure, hard to transition to sidewalks or off street paths, hard to park, and quite heavy. They do enable a people to ride who might not otherwise be able to, but without better infrastructure (protected bike lanes of sufficient width) or slower more forgiving car traffic, they just aren't practical.