You are asking the wrong question. _Total_ Road transport emissions is 11.9% of CO2 emissions. It is still a lot but it will probably be the hardest to get rid of due to the whole car-centric infrastructure.

- Energy use in buildings is 17.5% of CO2 emissions

- Energy use in Industry is 24.4% of CO2 Emissions, The steel industry alone accounts for 7% of global emissions of CO2

The _number_one_priority_ is to force out Coal and Methane Gas from the Energy production sector and heating. That alone would cut global emissions by more than 40%.

This is a gigantic step because it solely depends on government energy policy, Infrastructure investiment, and also requires us to advance against an extremely embedded lobby of both Coal and Oil&Gas.