I have installed an inverter so that my kids can watch the overhead tv while I am driving. It works very well by the way! My only issue is the sound from the tv is somewhat bothersome while driving.
I pull out the overhead bed which helps a bit and I even put a curtain from the bed down so that the kids can have the light on in the back at night and it doesnt distract me.
The sound of the tv isnt crazy loud and I dont want to resort to headphones for my 4 kids. It sure would be nice if 3M made a rollup sheet of plastic with sound deadening properties but sadly I dont think they do.
I'm thinking about buying a 6x6 carpet that matches the interior and attaching it to the overhead bunk to hang down while driving thus separating drivers cab and rear living area. I think the carpet should absorb some of the sound coming back at me. I figured I can cut a passage (much like a doggy door) into the bottom of it for access in and out of the cab. When not in use the carpet can simply be folded up under the overhead bed mattress.
Has anyone else ever considered this possibility or know of a better product? (other than Benadryl for the screaming & fighting kids) haha