Earlier quoted context omitted.
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The US has the second most CO2 emissions [1], and roughly 28% of that total comes from transportation [2]. That means our transportation emissions are higher than most countries' total emissions. Reducing that number by 25% would be the equivalent of the UK eliminating 100% of its emissions. 1. https://www.statista.com/statistics/270499/co2-emissions-in-... 2. https://www.epa.gov/greenvehicles/fast-facts-transportati…
Particularly air travel, which is part of transportation, would have been way down vs. normal, artificially inflating the %age contributed by others including the fraction you're implying would go away.