In 1957, all Cadillac Eldorado Broughams came with air conditioning, making it the first model to list air conditioning as a standard item. In the late 70s, people began moving to warmer states. In the 80s, the option-craze hit. People wanted cars with every option possible. Today, heating and air conditioning systems are very efficient.
Computers also insure that both the passenger and driver stay comfortable.
The future of automotive air conditioning is changing, and for the better. There are now more electronics and compressor designs. A tiny quantity can destroy a lot of ozone. Auto repair businesses are taking steps to reduce the amount of R-12 that escapes during service work. Most cars today use a new refrigerant called R-134A, which contains no chlorine.