Only because it is placing heavy taxes on fuel (which I think is a good thing). Compare with other oil-producing nations, which don't do this.

My point was that the fact that Norway produces oil doesn't trivially lead to more people buying electrical cars.

I concur. The country is pushing in the right direction to incentivize alternative energy consumption and its a fantastic opportunity to try and get a head start on establishing better infrastructure. I'm surprised Tesla hasn't invested more in a nordic supercharger network yet.