And Hertz is going to do what exactly? Let's say I rent a vehicle and something happens to cover the camera. If in fact I get notified while I have the rental vehicle what Hertz has said publicly is a lie (epic failure scenario #1). Second, what are they going to do to me as the customer? Are they going to charge me a penalty for obstructing the camera (epic failure scenario #2)? Again - they would put themselves in an awkward position bringing about the infraction.
With this in mind I will not rent from Hertz. If I am, however, forced to then I will take the risk of obscuring the camera. However knowing that there is a camera means there is likely a microphone as well - just as concerning, but much harder to obfuscate. Find the pinhole. Or I guess renting from Hertz will require either a short term fuse removal or clever cover for the "NeverLost" unit which will address audio and video.
Huh. For the last car I rented in Iceland, I was told that they had a GPS tracker on the car (supposedly only to be read with contact to the car) but would only check the data if there was a dispute about damage to the car which looks like it happened by driving one of the mountain roads (which is not allowed with 2WD).