GPS Speedometer: Speed Monitor will measure speed of any transportation. The speed limit is displayed on the heads-up display and GPS Speedometer screen. The Gps Speedometer app will measure speed of the trip and when the speed limit exceeds, the speed alert starts working. A heads-up display car shows the speed of your car speed by tracking time, speed, distance, and your current location. The data is counted as miles per hour (mph), and miles per hour (km) in a digital speedometer. The car sp