tell that to one of the guys I do work for. have a van here (nissan thing) that I have to totally rework for htis market. has two screens and he wants the LOT to work here. so nav,tv,dvd, radio and a few extras. it has to be zoned as well. have it for as long as I need it thank god but its fun. put it this way I have a scope,sig gen,meter out pinning the thing out.