Newest GPS devices have cellular chips in them so data is fed via Edge, not an intennae power cord, but that's same as Navigon 1.4 on iPhone ... w/ this type of data connection, some of the add'l services you get with the Nuvi 1690 are white pages search (not just Google search), nearby fuel prices, movie times, local events, flight status, weather, Ciao! (location tracking), etc ... and the screen is brilliant, rich with color.
I should mention that Garmin offers these services at a cost - due to the cellular signal. With the Nuvi 1690, 2-years of service are bundled with price of GPS and $5/mo after that ... but w/in 2 years, the entire GPS world will be different, so who knows ...
As far as I can tell, upcoming Garmin 18XX models will include browser, email, and camera features along w/ navigation ... and you may or may not be aware that Garmin has a Nuvi Phone out. I don't think it's doing very well, but they're giving it a try.