I don't know what percentage of radio is listened to in our cars.
For me, it is about 100 percent. Music is my life, but I almost never have a radio on in the house.
So I wish the people who write advertisements for radio would stop including ringing telephones as part of the 'plot', such as these things have plots.
Because I am always driving when I hear these things. I think, 'Darn it - who's calling me now?" and I reach for my cell.
Except I KNOW I usually have it switched off. But the sound of a ringing phone, even if it isn't my ring tone (hard to duplicate the sound of an ancient Audivox 8200) turns me into a Pavlovian dog.
Can't you people just have somebody knock on an office door instead of phoning?