> And because its picking up and dropping off dozens and dozens of 'rides' a day, the cost is shared by the user base. I imagine charging time would be an issu

> And because its picking up and dropping off dozens and dozens of 'rides' a day, the cost is shared by the user base. I imagine charging time would be an issue; there would have to be well-stocked supplies of batteries near each dropoff point, and some way to quickly swap them out.