[Kugyince]

Here's the official answer:

When I got in, I turned the engine on, and the tape was playing, the volume was turned up all the way, the song was "Friend of the Devil," I believe. I eject the tape, and upon ejecting it, it goes to default mode, which is the radio. And the radio is tuned to a station that we don't get in Boston. 'Cause what I hear is static. And I realize that he couldn't have had the radio tuned to that station, if he was just going two towns over. He had gone to Hampton Beach, New Hampshire. Got a tattoo.