The Brit could also have asked what the paperwork issues were that prevented a Brit from entering Canada.
Maybe the vehicle was car jacked.
To drive a car across the Canadian border, you need a valid passport (or NEXUS/enhanced driver’s license), driver’s license, vehicle registration, and proof of insurance. U.S. citizens do not need a visa for visits under 180 days. If renting, bring the rental agreement. Pets require proof of rabies vaccination.
Essential Documents for Border Crossing:
-For Persons (Citizenship/ID): Valid Passport, Passport Card, Enhanced Driver’s License (EDL), or Trusted Traveler Card (NEXUS). Children under 16 may use a birth certificate.
For the Vehicle:
-Registration: Original or copy of the vehicle registration.
-Insurance: Proof of insurance, preferably valid in both countries.
-Rental/Loaned Vehicle: A copy of the rental agreement or a letter of authorization from the owner.