The latest study is in at, and nothing much has changed - no matter how much the other media try to convince you that radio is fading.

"Survey: FM/AM still in-car leader.

Eight-in-ten Americans say they listened to the radio while in the car during the previous three months according to a NPD Group survey. That’s down two percentage points from the previous year. Down twice as much is CD usage, which a majority (53%) says they still use while behind the wheel."