Well, the enviros have an end game in mind and it doesn’t involve personal transportation of any kind. No matter how great the strides they will continue to move the goalposts.
The enviros will never be happy as long as there are people on earth who are not living in absolute poverty. On the extreme are those enviros who want the human race to be exterminated because they think humans have ruined the "purity" of nature (I think these fanatics are one step lower than the Nazis, if that is possible). The more "moderate" environmentalists long for a communist-style planned economy where few consumer goods are produced and everyone stands for half the day every day in bread lines for a slice of stale bread.
Right now the enviros are sort of hyping hybrid cars but this is only because these cars are not cost-effective and when one accounts for everything (batteries having to be replaced) it is not certain that hybrids are so clean after all. If batteries become more efficient so hybrids are truly clean and cost-effective, the enviros will find a reason to oppose them -- trust me on this -- no enviro anti-humanist will support anything that makes economic sense even if it helps the environment. Anything that helps humans and improves their standard of living is considered evil, even if it has positive environmental effects. The American left will regulate modern Diesel cars out of existence because these cars make environmental and economic sense and -- worst of all -- these cars with modern Diesel technology are desirable and high-performance.
Remember, the enviros think that you should not be zipping to the store in your high-performance bio-Diesel car -- you should rather be trudging for 16 hours a day behind your ox-driven plow and the anti-human "animal rights" faction of the left would not even allow you that.