My DD and 2 friends are planning on going shoe shopping at the outlet mall in Buffalo later this week. My SIL mentioned that she would need a letter from me so that they would let her cross the border with my car as it is not registered to her. Does anyone have any experience with this? What do I put in the letter? Is she going to be hassled at the border? Luckily she just got a passport so that is not an issue. Is there somewhere I can go on the internet to see something about this? Thanks for all your assistance.