There are so many externalities that aren't accounted for when you sell it for a dollar a litre, it's unfair to future generations. Also, Norway isn't all that excessive in international comparison:

http://www.aip.com.au/pricing/internationalprices.htm

Saudi Arabia doing 16 cents a litre isn't helping anyone: http://en.wikipedia.org/wiki/Gasoline_and_diesel_usage_and_p...

http://www.tcs.ch/de/assets/reisen-camping/reiseinfos/themen...