the autocar armoured car (not a tank) has been recently covered in this forum. there is a Landships article on the vehicle. it is also covered in the missing links forum. check them out, they are informative (although there are some areas in the article which are pure speculation and conjecture).
if you want to see one, go to the Canadian War Museum in Ottawa. they have one (probably the only surviving example) that is on display. unfortunately they have not displayed it very well, and it is pressed up against a wall. probably because, like most establishments and model manufacturers, they give more prominence to world war two. while you are in the museum, check out the lower hall; it too has some unique and rare guns and equipment (also badly displayed).
Camp Borden (not near Ottawa, unless you think a 4 hour drive is near) allegedly has some interesting vehicles to see. unfortunately the area in which they are stored is almost always not open to the public. you will probably have to make an appointment, and the retired officer in charge of the museum is a bit of a silly old fart (as Patton would say) who cannot organise himself.