“The average new vehicle today is larger, heavier, and thirstier than the average new car in 2013. Burning more gasoline (or diesel) means more tailpipe emissions. There’s no way to sugarcoat this. As the world gets hotter, humans are doing exactly the opposite of what needs to be done to lower their personal tailpipe emissions profile.” https://cleantechnica.com/2023/10/22/average-tailpipe-emissions-today-higher-than-they-were-10-years-ago/