1. If you have owned them and they have been used, the simple answer is yes.
2. If they are leased or financed it is unlikely that the lien holder will allow you to export them.
3. You have to ensure the cars are importable and all you need to know for importing them is here: www.riv.ca
4. You also have to export the cars from the US. see: http://www.cbp.gov/xp/cgov/trade/basic_trade/export_docs/motor_vehicle.xml
