"Ever" is a very long time. Considering how the wasteful cars / trucks / planes are on their way out in a short time frame (decades), while buses / rail / barg

"Ever" is a very long time. Considering how the wasteful cars / trucks / planes are on their way out in a short time frame (decades), while buses / rail / barges are much less so, I expect that transition to happen naturally as economic pressures make the position favoring the minority able to still afford cars / trucks / planes as less and less politically tenable.