HUNTINGTON, W.Va. (WSAZ) -- GPS navigation devices have revolutionized the road trip in recent years.

"They help you get to where you're going and do a lot better than pulling out a map on the side of the road," Alex Altizer said.

Altizer installs GPS systems, car stereos and other tech devices at Car Stuff in Huntington. He says with turn-by-turn directions, gas station finders and many other tools, GPS has made driving even easier.

"it is a luxury," Altizer said. "It's nice to have."

GPS works by using 31 different government satellites that pinpoint your location. But there is a new worry those very satellites are getting too old, and could even fall.

The news came out with a recent report from Congress that warns of "an increased likelihood that in 2010, as old satellites begin to fail, the overall GPS constellation will fall below the number of satellites required."

"The people that would be frustrated on that is the people who paid money for them," Altizer said. "They already have them, but they are just out of luck."

The U.S. Air Force is trying to calm consumer fears. They say they are handling the issue and there is only a small risk the GPS system will see problems.