That is pretty cool but that setup in the video is going to cost over $900. You could get the exact same thing less tangible gauges with an obd2 dongle and an app like torque pro for $25, $20 for the dongle and $5 for the app.
Edit: And it only supports 3 gauges. An app on an old phone or tablet will display literally any parameter your obd2 outputs plus data logging and code reading.