1. International Energy Agency. IEA, Energy balances for world - data and statistics. URL https://www.iea.org/data-and-statistics/data-tables?country=WORLD&energy=Balances&year=2017.
2. International Energy Agency. IEA, Final consumption by sector and source, 2018. URL https://www.iea.org/data-and-statistics/charts/final-consumption-by-sector-and-source-oecd-2018.
3. H. Ritchie, Our World in Data, Cars, planes, trains: where do co2 emissions from transport come from? 2020. URL https://ourworldindata.org/co2-emissions-from-transport#.
4. The Hedges Company, How many cars are there in the world in 2021? URL https://hedgescompany.com/blog/2021/06/how-many-cars-are-there-in-the-world/.
5. WardsAuto, The problem with cars. URL https://nordeamarkets.com/wp-content/uploads/2017/10/WardsAuto.pdf.