I have a couple. Don't remember the brand names, I'll have to go look. My wife used hers on a regular basis before she retired. People drive like idiots all over the freeways around here. Once she put in a dash cam, the activity of her getting cut off in traffic dropped enormously. Since she drove to work in the dark, I called it a "magic talisman".
We'll be rigging one up in the motorhome for driving to campgrounds. #LitigationState