What if they wouldn't sell cars to Jews,Uppity Blacks and Women?

This is actual copy from a radio ad for a California Ford dealer.

But did you know that 86% of Americans say they believe in God? Since we all know that 86 out of every 100 of us are Christians, who believe in God, we at Keiffe & Sons Ford wonder why we don't tell the other 14% to sit down and shut up. I guess maybe I just offended 14% of the people who are listening to this message. Well, if that is the case then I say that's tough, this is America folks, it's called free speech. None of us at Keiffe & Sons Ford are afraid to speak out. Keiffe & Sons Ford on Sierra Highway in Mojave and Rosamond, if we don't see you today, by the grace of God, we'll be here tomorrow.

I never claimed to be the sharpest tool in the shed, so somebody please explain what a person's religion (or lack thereof) has to do with buying a car?