The economic realities of electric car?

[stevebowers]

Supercapacitors are used by electric buses and trams that can recharge quickly and frequently at traffic stops.
https://en.wikipedia.org/wiki/Capa_vehicle
Autocars, drones, transporters, vecs and robots would use supercapacitors in a similar way - if they could gather electrical power frequently from their environment, they would have access to a much greater power density at any one time (compared to devices using batteries or fuel cells). On the other hand a car, drone, transporter, vec or robot that needed to store a lot of energy for a long time would be better off using fuel cells or some kind of battery.