This is very ambitious Umweltbundesamt: Ab 2020 keine Diesel- und Benzinautos mehr Translated Google Translate
That is truly impressive. If this article was sent to every governor and legislative minion in the US, along with their equivalents in Canada, Mexico, and the rest of the Western Hemisphere, I wonder which geopolitical entity would step up first. My money's on Uruguay.
Dirty ICEs should be banned. However, there are clean ICEs which should not be banned. An example of a clean ICE is the design introduced by Stan Meyer in 1994. It can be designed for zero emissions, or just water vapor emission.