In the opening scene in 999AD in the "Holy Land", there are tire tracks in the sand.
The order of the Templars didn't exist in 999, it was formed some 200 years later after the First Crusade.
Towards the end of the movie, when they came out of the tunnel thing at the nuclear plant, Lundgren asked where the nearest International Airport is. The response was to the effect if they crossed the border at Cornwall, then Montreal International was the closest. First off...the airport at Montreal, at the time the movie was made was called Dorval not Montreal International. (It has since been renamed Pierre Elliot Trudeau International) Secondly, if they crossed the border at Cornwall, the nearest International Airport would be Ottawa International, about 1 - 1 1/2 hours from the border.