>people tend to keep shitty cars much longer than rational, because they cannot afford a better car - throwing away all the emission savings Keeping an older c

>people tend to keep shitty cars much longer than rational, because they cannot afford a better car - throwing away all the emission savings Keeping an older car rather than buying a new one is often the more environmentally sound decision, because it takes a very long time for improved efficiency to break even on the massive environmental investment of manufacturing the new car.