guys, I am looking for invision headrest dvd. Has anyone installed that kind of car dvd before? Which types of invision headrest dvd you've got? Also need you advice about the invision headrest dvd I plan to buy. 7 inch Digital Car Headrest DVD Player with USB/SD/GAME/IR/FM transmitter. http://www.justcardvd.com/products/7-inch-Digital-Car-Headrest-DVD-Player-with-USB%7B47%7DSD%7B47%7DGAME%7B47%7DIR%7B47%7DFM-transmitter.html