I bought a 1975 GMC pickup in 1982. My father and I had to fabricate a new floor board out of 14 gauge galvanized steel plate for the drivers side. When I bought it there was a hole about 8” across that you could see the ground through.
I also had to replace the high beam switch because it was rusted out.
From Ohio across to Albany are where all the rock salt mines are in the eastern half of the country. There is a big one just on the north side of rt 90 just east of Buffalo. There are others south of Rochester and Syracuse. Rock salt is cheaper there than sand.
There are HUGE salt mines near Cayuga Lake in Lansing near Ithaca.
Interesting tidbit. You can store energy with compressed air. Salt caverns are ideal for storing compressed air because the salt is impermeable and you don’t get much air leakage into the salt. “Compressed Air Energy Storage” (CAES) was originally proposed as a way to balance electrical power day to night. You pump up the compressed air at night when excess capacity is available and let the compressed air out in the daytime when you need more power.