Not to threadjack, but I bought the Itronics ITB-100HD recently. I was able to get it cheaper than the BlackVue (and I heard problems with them overheating so I was wary). I've been pleased. It's similar to the BlackVue in that it rotates up and down but not side to side. It also has GPS mapping, speed data, shock sensor, parking mode and records in 1080, though I have it set to 720.
I think no matter what camera you have it's very hard to read license plates off to the side and the ones straight ahead are only readable if the light is very good or you are <10 feet away. Anyways, here is a video of mine in action:
And mounted in my car: