I can only imagine the arguments between the officer & the driver.
Officer: "I saw your eyes look at the screen"
Driver: "no no no, officer... I was... er... looking at my fuel gage"
Officer: "incorrect. If you were looking at your fuel gage, your eyes would have pointed straight downward. I saw you looking down, and to your right. Down and to your right!"
Driver: "Oh that? No... I... I was adjusting the air conditioning... yea, air conditioning!"
Officer: "for 20 minutes?"
Driver: "...I'm very picky about the climate in my car, officer"