Originally Posted by martyYYZ

I rented a car from SEA - YVR a long time ago. The car they gave me at SEA had British Columbia plates and I had no problems getting into BC. I've also had no problems doing this recently from YYZ-BUF one way. I have not tried to do a return but I have done one ways from BUF-YYZ as well with no problems (with Ontario plates)