I don't think anyone in India is buying old American cars
You can import used cars into India, but you'd generally be bringing them in from a left-hand drive market such as Japan, Australia or the UK. Plus, Indian law says import used cars have to be less than three years old, because India doesn't want to become a dumping ground for other countries old vehicles (which also undermines their local car manufacturing sector) [1]
[0] https://auto.hindustantimes.com/auto/cars/g20-summit-can-one...
[1] https://www.acko.com/car-guide/how-to-import-foreign-cars-to...