Transporting to and fron Canada?
I'm Canadian. I almost purchased a car in Michigan. It's not that big of a deal. Most of the onus is on the purchaser. This link has good info
http://www.canadiandriver.com/articles/mj/import.htm . U.S customs requires the vehicle information is faxed to them about 72 hours in advance of bringing the vehicle to Canada.
Basically, you just need to give the purchaser info required for U.S. customs.