My thoughts are that large, and therefore complex, political structures have a harder time converting the right idea to something that can be implemented practi

My thoughts are that large, and therefore complex, political structures have a harder time converting the right idea to something that can be implemented practically. Sweden, where the OP example comes from, is a relatively small political entity. 10 million people represented by 349 members of parliament, who are elected through a proportional representation system. We have high gasoline taxes. Actually a carbondioxide tax and an energy tax. It also attracts VAT. In 2016 the petrol (95) price was 13,02 SEK / litre ($1.50) of what 8,64 SEK ($0.99) was taxes. However, in Stockholm it wasn't enough to combat emissions and congestion. So rather than penalising all car travel across the relatively sparsely populated country, it seemed to make sense to have a toll at the city borders.