Is this excluding maritime shipping?

According to eurostat (https://ec.europa.eu/eurostat/statistics-explained/SEPDF/cac...) that is two thirds of freight volume and it probably still eclipses even rail transport in CO2 efficiency (until full CO2 free rail electrification), so this probably distorts things completely...

If you actually compare the emission fractions, you can see that the US uses much more CO2 per capita on transport compared to Europe (about 3 times as much!):

https://ourworldindata.org/grapher/per-capita-ghg-sector?cou...