Cell-phone synchronization can be a snap with Bluetooth, but what about iPods? Some systems still require manual hookup for iPod integration -- a hassle you can get around using an iPod transmitter.
These devices, like the JVC AAT100BT, pop directly into the iPod's port and broadcast your media -- whether it's music, podcast, video, et cetera -- straight to the stereo. And you don't need to worry about charging your device, because the power it needs is pulled directly from the iPod and should ideally last about six hours if charged fully.
Now let's forget the music for a moment and free up our hands for the task at hand: driving.