Bushnell ONIX400
Since GPS devices and XM satellite radio is sweeping the nation, it seems only natural that a company would try to combine them. The Bushnell ONIX400 allows you to download satellite imaging wherever you intend to travel, and it will overlay the weather information over that. As for the radio features, you can get the commercial free radio you can expect from XM.
The Bushnell ONIX400 was displayed at CES 2007, but it is currently not listed on their official website for sale yet. The company is expecting to release the ONIX200 and ONIX200CR sometime next month, so it may take a while before the ONIX400 hits the shelves.
