The funds have been earmarked for more eco-friendly transport services. It would be easy to go through the budget and see what happened. News articles can only

The funds have been earmarked for more eco-friendly transport services. It would be easy to go through the budget and see what happened. News articles can only give you so much context. It would consume an entire newspaper to give the back-story of every single news article. The reader is expected to do some work on their own. Also its not some 'random' tax. France has what they call an "ecological defense council" consisting of 150 randomly chosen citizens who debate such matters with domain experts. This idea has come out of such meetings.