90 years ago, the US was already overrun with 40 million cars (ompare that to the 276 million registered vehicles today). Many of those were on their last leg. Chicago car dealers promoted Used Car Week by stacking jalopies nearly 50 feet high on an island in Lake Michigan, where they torched them. 100,000 folks gathered to watch the flames of 200 cars fill the air.
I don’t know if you’ve ever smelled one of these, but they don’t smell pleasant.