As of April 10, 2007, the following Sprint cards support built-in GPS:
The green icon on the above map is our actual location, using the built-in GPS of the Merlin S720 and Streets and Trips.
If you are an RV'r, trucker or spend a lot of time in you car, take family vacations or always getting lost, you really should consider a Sprint EVDO card with built-in GPS. Not only will you get internet access while on the road - but you will also get real-time mapping and directions without purchasing any additional equipment.
Customer's who purchase their Sprint card from 3Gstore.com are entitled to this free pdf that explains how to use the built-in GPS with both Google Earth and Streets and Trips.