That’s not what historically has happened. Cars in California have special “California” or “50 state” emissions. You can do this economically because California

That’s not what historically has happened. Cars in California have special “California” or “50 state” emissions. You can do this economically because California is as large as a market as Canada. Also, it’s important to know that special California emissions standards have been the case for over 50 years. Additionally, I believe 14 other states have also adopted CARB standards. There is no economic reason to be doing this in 2018.