A recent survey found that nearly half of all Americans say they could not live without GPS in their car. The American economy couldn't live without GPS, either! Clocks on Wall Street, commercial fishermen, and of course, your Lyft driver, all rely on satellite navigation services.An outage in those services, however, would cripple the U.S. economy. A study found that an outage could cost at least $1 billion a day ... and we don't have a backup. Today on the show, we explain who owns GPS and why we don't have a Plan B if it fails.Related Episodes:The Military Industry ... It's ComplexWhy the FTC is cracking down on location data brokersFor sponsor-free episodes of The Indicator from Planet Money, subscribe to Planet Money+ via Apple Podcasts or at plus.npr.org. Music by Drop Electric. Find us: TikTok, Instagram, Facebook, Newsletter.