If you're gonna spend the money on a camera to protect yourself from bad popo, why would you get a camera that records the hood of your truck? If you're gonna do it, get a camera that'll actually record something useful.
Something like this will record what's actually happening, won't get stolen out of your truck, and you don't have to worry about your constantly recording video system getting subpoenaed if you get in a crash.
http://www.vievu.com/vievu-store/
