Fords were popular trucks to steal because they had the simplest ignitions of the big three to bypass until electronic interlocks were finally added. Older Toyota's and Honda's are desirable theft vehicles for the same reason Ford trucks were.
I'm surprised how easy it is to take a vehicle out of the country that does not belong you. The border crossings should be a good filter preventing international thefts - If you do not own the vehicle, you should have a legal document from owner allowing your use. There should be no question who these two people are that crossed the border unless the documents were forged - It may be difficult to track down the person, but the identity should be known.