help-understand Milleniums?

True story
When I was going to pick up my 65 barracuda my youngest asked if he could drive it to school and what kind of sound system it had. Explaining the car would take awhile to restore he still remained curious. I told him it had an AM radio. Of course he asked what that was. Told him that was the part of his sound system he had never used and when I was his age that is all I had to listen too.
We then went over no power windows, no power brakes and so forth.
He asked if the air conditioning worked well. I told him it didn't have air conditioning.
He looked at me and said I know you are jiving me now because every car has air conditioning.
I am still restoring my car, but he doesn't volunteer to help and hasn't asked about driving it anymore
May be a good thing.