KW206 OBD2 HUD gauge is a compact vehicle computer that connects to the diagnostic connector in seconds and gives you an extensive trip computer, real time gauges and trouble code reader. It can read fuel economy as you drive, tell you how fast you drive your car, tell you when you are going to run out of fuel and dozens of other functions. Installation takes only seconds and requires no tools. It can be moved from car to car. Works on gas, diesel, propane, and hybrid vehicles. KW206 works on all OBDII protocols including the new CAN protocol.