I got a dashcam that ran off USB, which I knew my car had a port for on the center console. There's ways to run the wire under the trim for the most part, but it's a long run.. and at the end there's a part that remains visible to some degree.
There are cams that can do a rear view as well from inside the cab, which likely provides enough evidence if you're rear ended.
I only opted for a forward facing dash cam.
In my state, you are 100% at fault for rear ending someone unless you can prove your innocence -- which a dashcam can do assuming the person in front does something shady (like lane change + intentionally slam breaks).
However, do note that dash cams are not going to magically make rear ending the person in front of you somehow that person's fault. Virtually no one seems to leave enough follow distance by default because doing so means someone merged into the space.. and a dash cam doesn't shift the blame for simple rear endings unless it can prove some kind of malice or inattentiveness on the other driver (but even then, inattentiveness of the other driver is not necessarily a legal defense for you not leaving enough room to react.. perhaps if they stopped faster than a car could be expected to break, e.g. hit a concrete wall....) -- of course, laws vary by state
There are cams that can do a rear view as well from inside the cab, which likely provides enough evidence if you're rear ended.
I only opted for a forward facing dash cam.
In my state, you are 100% at fault for rear ending someone unless you can prove your innocence -- which a dashcam can do assuming the person in front does something shady (like lane change + intentionally slam breaks).
However, do note that dash cams are not going to magically make rear ending the person in front of you somehow that person's fault. Virtually no one seems to leave enough follow distance by default because doing so means someone merged into the space.. and a dash cam doesn't shift the blame for simple rear endings unless it can prove some kind of malice or inattentiveness on the other driver (but even then, inattentiveness of the other driver is not necessarily a legal defense for you not leaving enough room to react.. perhaps if they stopped faster than a car could be expected to break, e.g. hit a concrete wall....) -- of course, laws vary by state