The thing you are missing is that currently, batteries are built in to the structure of the vehicle. To do otherwise would necessarily reduce the size of the ba

The thing you are missing is that currently, batteries are built in to the structure of the vehicle. To do otherwise would necessarily reduce the size of the battery significantly, as now the battery needs to fit in a convenient to remove location, and all the parts necessary to enable insertion/removal of the battery would take up space. Not to mention that the batteries are wickedly heavy, too heavy to be lifted by a single person, so there would need to be a machine to swap them, which takes up real estate at the gas station, and just generally complicates things. Maybe there will be swappable batteries eventually, or one part of the battery will be swappable, but as far as I understand thats not coming soon.