Or I don't answer because it isn't safe. I was driving a straight, flat period of I-10 through Texas yesterday, with no one around.
So, I picked up my cellulite, as I had a voice mail. I pressed the one button to retrieve. It said something like "Nasty you!! You can't retrieve you messages now". As soon as I stopped for a wee-wee, I was able to retrieve.
Best I can figure, they sensed I was moving at 80mph and some how figured I was alone. HOWL!!!!