Can I use a monitor as a tv in a car?

[markedeguia]

I wanna buy 4 Dell UltraSharp U2711 monitors and attach them to the headrests of a 2012 Ford Flex Titanium. I was hoping to use them for satellite tv and video games for passengers. I guess I could buy separate computer speakers and use them that way. Is it possible for me to do this and if so how would I do this? I want the monitors to be able to play video games (all 4 of them) on an xbox 360/ps3 and also be able to( again all 4 of them) watch satellite tv on separate channels. If it is possible to do this I'll probably have it all professionally done seeing as how I am a total newb at all of this tech stuff. I will be using Direct-TV for travelers as the satellite service. The reason why I don't want to use one of those DVD Entertainment systems is because i don't really get to choose the display or the monitors and I don't like any of them, I want to use my own. I thought this might be possible to do because I know people can use their computer monitors as tv's. The person with the best, most detailed, and helpful response will get 10 points, also if there are any alternative ways you could recommend please do so, I am open to suggestions, also instead of monitors maybe I could get a vizio tv and use that instead???