Quick question for those that actually wheel their rigs. I want to put a system in my Jeep, including a subwoofer, but am having reservations about it because of the fact that this rig will be used as an off road toy. I've always been preached at that anything not strapped or bolted down in the interior becomes a projectile in the case of a roll-over. Therefore if I do put a sub in my car, I'd like to attach it in some way, but I'm not sure what the best route is. What have the rest of you done for this?