Recording radio like a DVR

We need a DVR type device in vehicles. Too many times I would have to leave my car when my favorite song or my favorite talk show host and I cannot follow the rest of the story/song.
Wouldn't be nice to push a "record" button and when you return to your car you can pick up where you left off?
That's why we have DVR's in our home, to record our favorite programs so we can play them back later.
We should have the same technology in our cars!!
art h 06/24/2013
What a great idea!!!