Edit #2: ICE is a type of train in germany. I mistook “ICE cars” as meaning trains and was wondering how flying is supposed to be more efficient than trains. Hence my confusion.
**OG comment (invalid, see Edit #2):**Where are these numbers coming from?
I cannot find any source for the 3-4l/passenger/km claim. I cannot find any source for the claim that planes are more efficient. Nothing comes even near this claim.
Edit #1: I just want to add that my old combustion car (VW Up! / Seat Mii / Skoda Citigo) burned around 4.2l/100km. So I according to you, if I had another person with me, I’d beat both planes and trains with what stands uncontested as the most inefficient form of transport?