The automated in-car navigator that predated satellites

Standalone navigation devices are a dying breed. These days vehicles tend to have navigators plumbed into their dashboards, and as long as there’s a smartphone to hand… well, there’s an app for that. Demand for the devices nosedived years ago, but the technology underpinning them is alive and well, floating out there in space. What we all know as GPS wasn’t operational until the mid ’90s, though this was predated by Transit, the first satellite-based geolocation network completed in the ’60s. But the first automated in-car navigation system was developed long before we had the technology to put anything into space.