The team reported a "strong smell of cannabis" from inside the car and during a search found "a very large knife."
Both the driver and his passenger had cannabis with them and the driver failed a roadside test for cannabis. A blood sample has been obtained from the driver for analysis.
The two people in the car, that was stopped in the early hours of Boxing Day, have been arrested for multiple offences.
The investigation has been handed over to the North Yorkshire Police Investigation Hub.