It's a good idea. No, wait. It's a bad idea.
Depends on what you want to do with the system. Are you asking if you can run a desktop system in your car? Yes you can.
What's your criteria for "goodness"? Power consumption, price, size, etc?
Give us a little more info.
BTW is the touch screen a desktop model or one for the car? Just asking as the brightness of a desktop model isn't always sufficient for carp applications. Plus, that's BIG! Are you going to put it in your dash?