I have rented cars the last 3 trips and have had no big issues. Canadian drivers license is fine for them (or whatever country of origin) - It is the documents from the Car rental company that show you are the person who the vehicle is rented to as well as the Rental Companies ownership slip that they need. I always ask at check out "Do I have sufficient documents to satisy the JCF if I am randomly pulled over". The 1 time I was pulled over , the cop was pulling every 10 -15th car (mostly with tinted windows) to see who would buy him lunch. I showed him the papers and smiled sweetly and we were back on the road.!!