Its features include an AM/FM radio, CD/DVD player, embedded Sirius satellite radio with real-time traffic info, [a] 20GB HD, a USB jack, line-in jack, two audio outputs, Bluetooth hands-free calling and a 6.5-inch touchscreen with voice control.

The 20GB HD itself hold[s] all of the navigation software, which precludes the need for a dedicated DVD drive like most nav systems use. It also stores about a 1GB of system software (think operating system) and what's called a Gracenote lookup engine. Since you'll be able to rip CDs into the car's hard drive right on the spot, the Gracenote software is what will generate the artist, title and track information from a database of over 4 million CDs. Aside from ripping CDs directly, there's also a USB on the lower left side of the head unit that allows music and pictures to be transferred from a USB flash drive. There's room for around 1,600 songs to be uploaded depending on their file size.