Dashcams are a necessity in Russia.
They are a good idea anywhere.
I use a front and rear dash cam on my vehicles at all times.
In this state we have a nasty little rule that you are
always responsible for your nose.
So we also have people doing STUPID stuff like
not giving a fuck when they pull out into traffic.
The camera gives one a chance if you get victimized
by one of these assholes.
Around here? If'n ya drive a "dually" (as in a one ton dual rear wheel truck) you don't need no stinkin' camera's...folk jes better get outta yer way....