Changes
/* Train */
*Lausanne-Berlin: 0.23kgCO2/person, roundtrip '''0.46kgCO2/person'''
Source: https://www.umweltmobilcheck.de/ (DB claims to be using only green energy .... what about production during night when renewables are low?train don't stop?!)
*Computation using an average of 32g/CO2 per km ([https://www.mein-klimaschutz.de/unterwegs/a/einkauf/welches-verkehrsmittel-verursacht-im-vergleich-mehr-co2/ source] ): 2300km x 0.032gCO2/km = '''73.6kgCO2/person'''
