While I've just invested in a Garmin Mini 2 dash cam, I'm considering returning it for one that records the interior as well.

So my question is, (having seen interior camera footage on YouTube reviews where you can see the outside back of your car, and that's with a normal sized car) ... does anyone use, or think you can use, footage from an interior camera to capture the outside back of our cars for say a rear end collision and such, considering how small our cars are front to rear?