Review on Universal Car HUD Head Up Display With Digital GPS Speedometer, MPH/KM Acceleration Time, Compass, Altitude & Driving Distance Monitoring - Overspeed Alarm HD LCD Display For All Vehicles by Jonathan Sriubas

This gauge worked perfectly for me. I was really surprised. I no longer look at the speedometer or car clock, and I have a great source of information for travel time, travel distance etc. This has become fully integrated in my driving experience. I imagine that, for those who have to keep track of mileage and time for billing purposes, this is very helpful. I suspect that we will eventually see this type of device sending its data to your computer for record-keeping.