$6000 isn't just sticking it to the Canadians. There are heated seats, heated mirrors and steering wheel. HVAC duct for the rear seats. And rather cryptically, "temperature management." Dollars to doughnuts that refers to a liquid based thermal regulation for the battery pack. Which means a reservoir, a pump, plumbing, heating elements, batteries have to be configured differently to facilitate liquid flow.
Not saying all that amounts to 6k but it is definitely a significant item and makes you wonder about the people in the Northern US who do not have the "winter" package. Everyone thinks about the damage heat can do, but extreme cold can affect the longevity of the battery not just its short term performance.
Also, certain Canadian provinces are eligible for $8500 in tax rebates, which may have factored in Nissan's decision to charge more in Canada.
See article below for details:
http://nissan-leaf.net/2010/09/09/nissa ... ge-update/