I hold up this situation to those (particularly Tesla fans) who keep repeating "If you build it, they will come." Because, in the case of Japan, they certainly have not come, at least not in numbers you'd expect.
Japan is more conducive to an all-electric fleet than the US. Shorter driving distances (it's not unusual to see a 10 y/o car with less than 50k miles on the odometer), frequent congestion, and freeway speed limits tend to be low (around 80 km/hr, or 50 MPH) even in rural areas. Japanese prefer taking the bullet train, coach bus, or (increasingly) flying, to long trips by car.
Despite that it appears they have just as many concerns about range anxiety as Americans.
Blue Ocean 2012 Leaf SV, lost that 1st bar at 34 months/26,435 miles. Lease returned 2 months later. Final LeafStat figures: 225 Gids, 17.44 kWH, SOC 91.89%, SOH 82.36%, 69.49% HX, 54.57 Ahr, battery temp 61.8 F.
Now driving a 2015 VW eGolf SEL.