How To Improve '06 Gs300 Am Reception?

[calmfan]

The AM radio reception on my '06 GS250 is not good; I get static in areas where I never had a problem with previous cars I owned. The dealer has checked it but simply says "my reception is as good as any other GS", which doesn't say that there is not a reception problem with this $40K car. Any ideas will be appreciated. Do I need to install an additional antenna or a power boost?