What we're starting to see is that enough major global markets have committed to banning combustion engines in cars in the next 10-20 years, that it will make economic sense for global auto manufacturers to focus their product development on alternative fuel vehicles.

Mercedes just announced that they will cease development of combustion engines to focus on EV's. VW Audi Group just said that this is their last generation of combustion engines. I suspect we'll see similar announcements from other manufacturers in not too long.

We may see some countries soften their goals, but I think if some of the big automotive players commit to having products available to meet those goals, there won't be much need to relax the goals. Only things that would cause a rollback is if anti-environmental politicians get into power or governments attempting to protect domestic car companies that are late making the shift.

I do like these goals though because even if Trump stripped California of some of its powers to regulate cars, ultimately the car manufacturers still are forced develop this technology to stay relevant in the world marketplace. If Ford and GM stay with ICE engines too long they will become obsolete.