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skarn86 t1_irdv34u wrote

I did some rough math for cars.

Swapping a 15 old car for a new one within the same category, the break even point in terms of CO2 emission is about 300000km, say 200000 miles. If the old car is ~40years old the break even is much much shorter.

So by all means make sure you get a good amount of miles out of a car, but a 50y/o Mustang is just an ecological monstrosity and should be only be used as a show piece.

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