You toggled the camera on, while driving forward, to see how close the vehicle behind you was? The truck has 3 mirrors which are 10x safer to view while driving forward than looking at a bright screen in the dark. If you couldn’t see the vehicle behind you in the mirrors then obviously he’s following extremely close, so taking your eyes off to view the screen wasn’t the brightest (no pun intended) idea. No offense but that seems reckless on your part, not the trucks fault.