Makes you wonder if they picked that form factor to appeal to a certain market segment that's current underserved?
I love the concept, but at $20.000USD it's to much. My guess is that they'd need to hit 15.000USD for the extend range version. Two minor thing I would chance, as others pointed out: Bench seat, and the second: Just make the holes/mounting options for an after market stereo.
Hopefully this is successful and will push other manufacturers to create similar options. I saw an old Morris parked outside the gym the other day, it took up maybe 2/3 of a parking space, it was perfectly size for my grandparents, it perfectly sized for my needs. I get that the car grows a bit in size, once all the modern safety features are added, but I don't see why that would amount to much more than the size of say an Opel Kadett D or E, or a Volvo for the 1980s.