High speed rail is faster door to door than flights until around 1000 km / 600 miles, which gets you an awfully long way. Add in the renaissance of night train

High speed rail is faster door to door than flights until around 1000 km / 600 miles, which gets you an awfully long way. Add in the renaissance of night train service in central europe and suddenly you're covering a ton of travel under 2000-3000 km with rail. I agree carbon neutral aviation fuel is likely going to need to part of future transportation plans, but it's likely going to be really expensive per passenger km, so would be better saved for truly necessary cases like crossing oceans. I'm not sure there is a sustainable way to continue our current level of short and medium haul flight usage.