why do so many still put AM/FM radio in their used car ads?

[cleveramerican]

I was looking over the used car ads in my local paper.
Daughter is getting ready to drive but thats another story.
It struck me how old fashioned it sounds to say,
I have AM and FM radio in my car.
And yet every third ad lists FM radio like its a very desirable feature.
How many 2005 Sentras are out there WITHOUT FM radio?

I'd gamble and guess not too many.