Several years ago I was driving my buddies 69 Dart to the race track for him. I stopped at the crossing station and the gal asked where I was going. Obvious to anyone else that the car was going to the drags. She would not let me enter Canada because I did not have a written note from the owner saying it was OK for me to do that. I called the car owner and waited for him, when he got there with paperwork 1/2 hour later I drove the car to the next station away from the gal that turned me around. The guy at that station asked if I was going to the drags, (did not ask for any paperwork) then asked how quick the car was and waved me through saying "Have fun, hope you win!! Some agents have a better attitude than others.