Well you will need to make sure it meets Canadian emissions standards of course.
(NOT)
Teslas are widely driven in Canada, exact same model. You will have to pay HST probably, and various other taxes. There are web sites about importing cars into Canada from the USA. I don't think there will be anything special about a Tesla though it may be over the weight limit and need a fee for that.
US car prices – both new and used – are usually well below Canadian prices, so saving hundreds off the sticker price makes buying across the border an attractive proposition. If you are importing a car from US to Canada, this is a breakdown of steps you need to take to make that
borderbuddy.com