You could lean up against something and pedal to get a bit of charge back in the battery, then you just need to pedal it home like a regular dead e-bike, no?
I don't think the pedals are attached to the drivetrain. They look like they are literally just to charge the battery. So this bike is just dead when it's out of batteries? Unless I'm missing something.
I agree with you, but I'm not clear how it relates to what I said. You charge the battery back up slightly by pedaling, and then it's usable again. You just need to pedal hard enough on the way home that you charge it more than it discharges. Though I don't know what the various efficiencies are.
The bike won't fit any of that until there's hot swappable batteries sold everywhere, and when it's dead you'll be pushing it back home.