Not to mention the cost of your time, which should factor highly for well paid people that can afford to fly anyways, and if you are low paid, it’s likely your

Not to mention the cost of your time, which should factor highly for well paid people that can afford to fly anyways, and if you are low paid, it’s likely your vacation time is scarce, so you wouldn’t want to use it all in the transport. The comparison just makes no sense to me. I take road trips because I love road trips, not because I think the economics are somehow better than flying.