why don't we work together to make a plug-in for google earth or google maps that work similar to the iphone interface for maps and also intigrate it with contacts from ur phone list and web via an address link.
IMO the iphone is a huge step in integration, simplicity, and touch control and could serve as a great model for car pc interfaces. My friend has one and i wish it was bigger as I would just use that as my car pc.
Integration is the key here, and google, since they own the world and the moon... and almost everything else.