2 wheeler with electronic weight balancing maybe more efficeint than 3 wheels? not sure if the cost of electricity plus weight of such system would be less range affecting than teh weight of a third wheel. need more storage space? put on a small trailer b/c most people wont need much storage space most of the time. https://www.aptera.us/forum/aptera-design-discussion/increasing-average-efficiencies-by-rental-of-usually-uneeded-things?appSectionParams=%7B%22origin%22%3A%22member_posts_page%22%7D
https://www.youtube.com/watch?v=qe3nAFMhwnc how about something like this, where 1 seat in the middle, 2 behind that driver seat with some legs room next to driver, like gordon murrays t.27 https://www.greenmotor.co.uk/2013/08/gordon-murray-t25-t27-to-be-built.html also maybe a folding mechanism could make parking cheaper and easier on both personal and on a mass scale for a local city government (cost of parking space, including less traffic and real estate issues vs normal cars over time) https://www.designboom.com/technology/casple-podadera-folding-electric-city-car/ it can be done by using rear brakes to stop the car and front motors to push the car into the folded position. the frontal wheels can also turn inward to fold in for compact at low speeds where weight distribution stability is not as inportant as being compact in crowded places and parking https://www.triggo.city/. also a retractable body shell can make the car compact when extra space is uneeded and especially when extra space is often not used, such can be something like a bag on rear or roof of teh car, or a retracting solid chasis structurehttps://www.youtube.com/watch?v=3mEkE7TMNZw. https://www.riversimple.com/
wether or not aptera will be used for public ride sharing rental car service can influence the design.