MikeAqua:Making the leaf available new with Japanese finance would have more impact on uptake by the general public.
promotional car interest rates in Japan are pretty much the same as they are here,
http://www.nissan.co.nz/Offers/Offers
2.9% fixed 36 month
http://www.nissan.co.jp/CREDIT/BVC/LEAF/
2.9% fixed 5 years, ( although there are few more wrinkles in the Japanese offer, such as requiring you to make extra payments in Bonus Salary months (July and December)