As an urban dweller (nyc) who would love to see fewer autos on the road, I view this as a positive development.
But I can't help but wonder if there is an automakers lobby in Denmark. If so, why wouldn't they oppose/ shutdown such a measure?
I can only imagine the insane backlash a similar ruling would have in the US, in spite of the long term benefits to society from having fewer cars.
[edit: should have read the article in full before commenting-- I see now it is about _lowering_ the tax rate]