It appears that most of the Canadian cars we see here are left hand drive. Did they just make right hand drive cars for export?
No, several provinces were right-hand drive into the twenties.
They changed on these dates.
British Columbia on 1 January 1922, New Brunswick on 1 December 1922, Nova Scotia on 15 April 1923 and Prince Edward Island on 1 May 1924.
Newfoundland changed to driving on the right on January 2, 1947 before becoming part of Canada in 1949.
There are a number of right hand drive Model T's on the road in the Maritime provinces. Also a few being rebuilt presently.