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Planned Phase-outs of Gasoline/Diesel Cars
(cdn.statcdn.com)
For the map enthused!
Rules:
post relevant content: interesting, informative, and/or pretty maps
be nice
A gradient is fine and even desirable for a small number of groupings like this, and allows you to see what order places are in without reference to a key. You just need to pick one created by people who know what they are doing rather than pulling colours out your butt.