it's an old concept, re-greened and recently rediscovered yet again. Even now people are pointing out that it's not always the 'greener' option, depending on where you come from, where you end up, and what you do there - and how many others do the same
My grandparents took their kids on cycling holidays around France and the nearest bits of Spain and Belgium, between the Wars. The grandkids are still telling their kids the stories.
2007 Honda Fit $4,400
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REVO luggage $100
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Is an international travel backlash coming?
https://www.independent.co.uk/travel/news-and-advice/flygskam-anti-flying-flight-shaming-sweden-greta-thornberg-environment-air-travel-train-brag-a8945196.html