While listening to MP3 it is possible to receive traffic alerts which are signalled via RDS. So it must be possible to track at least RDS in the background. Via RDS it would be possible to analyse whether the actually tuned radio station does provide traffic alerts. If not -> auto-tune.

The interesting question would be
1. if auto-tune could be done in the background
2. if this could be done via hijack

Juergen