[busymichael]

Notice both the text and graphics. Further in the video he shows how pressing the eject button on the radio screen opens the cassette player. And how diagnostic messages "pop up" on the screen, taking over the screen.

My father had a 1988 Buick with the led speedometer -- nothing like this touch screen. But, we thought it was so hi-tech at the time. He also had a cell phone built into the car -- but we were never allowed to use it because it cost $2+ a minute!

[busymichael]

After watching the video again I realized the screen has some kind of digitizer behind it. That was highly unusual for touch screens of the era.

Most touch screens from the 80s were not actually sensing touch; instead they had light beams and sensors in a grid around the screen. Your finger would interrupt the light and the sensors at the x and y axis would determine your finger's placement over the screen.