Many European cars have less in the way of emission-pollution add-ons than American-Canadian cars. In Germany I remember getting a rental model 'like mine at home,' and driving out of the lot. As I applied gas to enter the street, I spun the rear wheels- a bit of shock.
In Mexico, some years ago, our rental car had no choking capability. At our motels, we were woken up in the mornings by people starting up their cars and letting them run. Only a few models had choking built in. Moreover, the gasoline was lower in octane. Probably changed by now.

Oh, sure, Catspaw. The hundreds of thousands of oil company employees will love that. And all of the investors who have energy stocks, either on their own or in their pension funds or savings and loan portfolios or bank savings will be poorhouse bound.

Since Canada is now a major supplier of both oil and gas to the United States, I suppose you will take it over too. And Mexico. And Nigeria. And --

U. S. Imports March 2008

From Canada, 1,727 million bbls
From Saudi Arabia, 1,535 million bbls
From Mexico, 1,232 million bbls
From Nigeria, 1,138 million bbls
From Venezuela, 858 million bbls
From Iraq, 773 million bbls.

Energy information from the U. S. Government, Energy Information Administration.

Oh, yes, you would have to fight off the Chinese, Indians and other large and growing consumers.