It's roughly the battery capacity, and therefore the range, of a plug-in hybrid... but without the engine. That makes sense (for cost, weight, etc) and would work for many people, but I think at that range the inability to start an engine for more range occasionally would make it undesirable for most people. I would only tolerate 100 km range - and that only under ideal conditions - for a special interest application, rather than an ordinary econobox. I came to this forum with the intention of converting our Triumph Spitfire, and even for that car used only for fun drives on sunny days 100 km range was just too limiting (given our current home location).