On the grimmer side, inflation keeps cars on the road longer, when drivers who might prefer a new car keep an old one limping along instead. As long as it’s being driven, an old vehicle keeps emitting air pollution, typically much more than a newer car would. Jonathan Morrow walks through M&M Auto Parts, his family’s salvage yard. Engines sit on long shelves at M&M Auto Parts. A car is loaded into the crusher at M&M Auto Parts, on top of an already-crushed black Nissan Rogue.