I drive an 18 wheeler over the road. A few months ago my company installed two cameras in my truck. One aims forward, and shows what is happening on the road ahead.
The other aims into the cab, and is on me. 24 hours a day. Complete with audio.

I do not like the camera in the truck. I have been here 4 years, no wrecks, no tickets. Just had a big argument with a nerd in the Safety Dept., told him I wish I worked for a company that did not have cameras in the truck.