what is the biggest issues that you guys have run into, those of you that have done this. I really want to try it, and I think I have the sound figured out, as I should just be able to run a line out of my N7 then to a potentiometer then to the amp I have mounted under the passenger seat. The biggest concern that I have at the moment is the issue of when I don't drive the car for a while how to get it to start back up. I would prefer to not have to hack into the tablet, as I would like to possibly use this out of the car as well, maybe later down the road.