antenna is in the shark fin,
I just took my car down the 101 to san luis obispo and it worked fine the whole time. It also works fine in the san jose area, san ramon area.....
there are certain spots where it will always cut out but it's brief (some spots are clear above too, no trees or anything)
sirius uses land based and sat based transmitters so maybe your sat signal is not being read..........
sirius kicks XM's butt in programming, but XM definetly has a stronger signal
hope they fix it!