Really depends on how much you weigh CO2 emissions, different air pollutants, noise pollution, etc. Environmentally friendly isn't a single dimension. Furtherm

Really depends on how much you weigh CO2 emissions, different air pollutants, noise pollution, etc. Environmentally friendly isn't a single dimension. Furthermore it's not like he's going to dispose his older car, it's going to go to somebody else who might have an ever older, more pollutant car.