The job I found was crushing new ground limousines so that they could be shipped back to Pittsburgh as scrap. Cadillacs, Chryslers, Eisenhowers, Lincolns -- all sorts of great, big, new powerful turbobuggies without a kilometer on their clocks. Drive 'em between the jaws, then crunch! smash! crash! -- scrap iron for blast furnaces.
It hurt me at first, since I was riding the Ways to work and didn't own so much as a grav-Jumper. I expressed my opinion of it and almost lost my job ... until the shift boss remembered that I was a Sleeper and really didn't understand.
"It's a simple matter of economics, son. These are surplus cars the government has accepted as security against price-support loans. They're two years old now and they can never be sold ... so the government junks them and sells them back to the steel industry. ... The steel industry needs these cars."
"But why build them in the first place if they can't be sold? It seems wasteful."
"It just seems wasteful. You want to throw people out of work? You want to run down the standard of living?"
"Well, why not ship them abroad? It seems to me they could get more for them on the open market abroad than they are worth as scrap."
"What! -- and ruin the export market? Besides, if we started dumping cars abroad we'd get everybody sore at us -- Japan, France, Germany, Great Asia, everybody. What are you aiming to do? Start a war?" He sighed and went on in a fatherly tone. "You go down to the public library and draw out some books. You don't have any right to opinions on these things until you know something about them."
... I raised the subject just once more because I noticed that very few of the price-support cars were really ready to run. The workmanship was sloppy and they often lacked essentials such as instrument dials or air conditioners. But when one day I noticed from the way the teeth of the crusher came down one that it lacked even a power plant, I spoke up about it.
The shift boss just stared at me. "Great jumping Jupiter, son, surely you don't expect them to put their best workmanship into cars that are just surplus? These cars had price-support loans against them before they ever came off the assembly line."
So that time I shut up and stayed shut. I had better stick to engineering; economics is too estoteric for me.
Obviously, writing a half century ago, Heinlein got much wrong about the 21st Century, such as his naive assumptions that America today would still have a steel industry in Pittsburgh or an export market for its new cars.