Android/ Google maps navigation?

recently saw a demonstration of the new android system and I was impressed!





Particularly the 2 version which has navigation combined with Google maps-only thing I can't figure out and which is surprisingly not mentioned on any reviews. Normally one would have to be on the Internet to see Google maps, but of course when navigating this is not really practical as often Internet access may not be available.





So does this Android/Google maps navigation work just by accessing satellite like a GPS or does one have to be connected to the Internet as well to see the proper Google maps?





Another thing I will not be using a contract but want to use it with my old Sim card so probably won't use 3G just normal phone, so I imagine the Google maps navigation will not work with ordinary pay as you go Sim card?|||It uses the GPS satellites to get the phones location and the data connection over the internet for the maps. It is certainly designed with the assumption that you will have a data plan attached to your sim card.





However most android phones also have wifi and the application saves the directions and maps it needs in case you lose phone coverage during the trip. So as long as you set the route you want to take somewhere with wifi coverage (e.g. at home) and don't go off route it should in theory work without a cell network data link.