TomTom GPS updates and improvements are coming faster and faster these days. Portable and dashboard-mounted GPS navigators are now standard in many new cars and trucks, and the uses of GPS in daily life are expanding rapidly.
Drivers now expect much more from their car GPS unit than accurate street and highway maps. They want to know speed limits, driving times, and where traffic is likely to be backed up. They want to know the location of the nearest gas station, or post office, or restaurant.
GPS technology uses signals from military satellites to pinpoint a user's exact geographic location. But most of the time, knowing your exact latitude and longitude--in and of itself--is not particularly useful. The real value of GPS lies in the interface between the positional signal from space and the mapping software stored inside each receiver.