This study shows that a combination of additional strategies in the “All Out” scenario could further reduce emissions in line with a well-below 2°C pathway with the same parameters. This is similar to what a previous ICCT study, Graver et al., (2022, found is achievable for the aviation sector, but is still far from a pathway that aligns with 1.5°C. The sizeable work that remains is underscored by another finding of this study, that projected CO2 emissions from vehicles that are already on the road today would exceed the limited carbon budget remaining to avoid overshoot of 1.5°C. Indeed, the cumulative emissions from selling no new vehicles going forward are only 10 billion tonnes lower than the All Out scenario when no other measures are implemented.
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