> They don't refine oil locally and would have to buy back gasoline There is a refinery at Mongstad capable of processing 10 mill. tons of crude oil per year.

> They don't refine oil locally and would have to buy back gasoline There is a refinery at Mongstad capable of processing 10 mill. tons of crude oil per year. It could have provided all the gasoline used in Norway, but probably not all the diesel. More relevant is probably that there is a significant hydroelectric production, so there is no need to use petroleum to generate the electricity for the cars.