Japanese cars also had dealer-installed air conditioning at the time, probably to get around import quotas and to boost the U.S. parts content of their vehicles.
Chevrolet made AM/FM standard on passenger cars in 1988, while the 1988 Buick brochure listed the Regal as still only coming with an AM radio as standard (strange, because it was their "personal luxury" model). In the 1989 Buick brochure, all models had AM/FM standard.
The last Ford car with an AM-only radio was the 1990 Escort. The redesigned 1991 Escort gave you a choice of an AM/FM radio, or no radio at all in the base model.
As of the early 2010s, you could still get some cars with no radio and no A/C:
blog.1aauto.com
Chevrolet made AM/FM standard on passenger cars in 1988, while the 1988 Buick brochure listed the Regal as still only coming with an AM radio as standard (strange, because it was their "personal luxury" model). In the 1989 Buick brochure, all models had AM/FM standard.
The last Ford car with an AM-only radio was the 1990 Escort. The redesigned 1991 Escort gave you a choice of an AM/FM radio, or no radio at all in the base model.
As of the early 2010s, you could still get some cars with no radio and no A/C:
Did You Know That You Can Still Buy A New VW Without A Radio? - 1A Auto
VDub2625 over on VWVortex spotted this new Jetta in a local dealer. It is the meaning of a base model, like no radio sort of "base". Why you ask? Well, because they are selling it brand new for $13K, and viola, it is posted all over the interwebs for being a strange bird. Win? Lose? I don't...