There is a reason hybrids have external roof antennas I have found out. The radios cannot work with an in-cabin antenna I suspect because there is too much EMF from the power cable running under the body of the car.

This worries me somewhat. I found this out because my sons MP3 player has a gizmo to transmit on 88.7 to the car radio. Works fine in our non-hybrid vechiles - but not our HCH.

Does anyone know what is "safe" here? Potentially highest risk is for small children and infants would be my guess...