Makes me wonder if this is what Donut Labs gonna ship in few months.

This is a big deal, and sodium is lot cheaper and easier to get than lithium. Lithium batteries are shit in cold weather.

But stating range from a battery is as dumb as quoting range from a tank of gas.

The cells achieve an energy density of up to 175 Wh/kg

This is kinda shocking density for a first gen mass-priduced batteries.