What would be the refill/recharge time for this car? Is the alternative to have a 100gallon gas tank or towable battery array?

I can charge my phone in under an hour. I can do so in the car, at my desk, or any of hundreds of other places given the ubiquity of micro-usb. For me, once I can go all day on a charge any excess capacity just means more weight/bulk.

A week-long battery would be obscenely large, the phone unnecessarily heavy all while providing nearly zero benefit to my use case.