And what's the significance of that?
When you look at the trading relationship between the US and Canada, it's far more equitable and even-handed (and open) then with any other two trading parters in the world.
Pointing out these production differences, or making distinctions between made-in-usa vs made-in-canada means about as much as made-in-michigan vs made-in-ohio.
Do Ohioans go out of their way to buy vehicles (or any products) made in Ohio over those made in another state? What's so different about Michigan vs Ontario vs Ohio? We all buy each-others products along free-market, free-access lines. You can't say that for US vs EU trade, or US vs Japan trade.