So we can save the world by all becoming Dutch (biking) or Singaporean (public transport) vegans who never travel further than a few 100 km? Boom, all problems

So we can save the world by all becoming Dutch (biking) or Singaporean (public transport) vegans who never travel further than a few 100 km? Boom, all problems suddenly solved? You might want to run the numbers on that one some more.