I was thinking of getting my wife a
Parrot Bluetooth Handsfree Car Kit. Okay, it might not be applicable, but hear me out.
If he spends a lot of time in the car AND has a reasonably modern cell phone AND has the appropriate Roaming features on his plan, this thing allows him to talk on the phone while driving without using a headset. It also - wait for it - mutes the radio when a call comes in. They have a higher model with GPS, too.
I just thought it was a cool combination of auto, cell phone and audio technologies, so I'm trying to find a rationalization for *somebody* to get one.