Was just checking this system out. I need to know if you need a tv with the system, or if you can just use the screen in the controller? Spent about 10 min sampling a couple of games at my local game stop. I did not need the tv for any of the 4 games I tried. I want to mount this in my taxi and have no room for a tv. Here is the controller with screen:

The main unit will fit right into my laptop bag(along with my 19" laptop):


I already have a 6A 110v power supply in the cab for my laptop, so this would be an awesome powerful, portable system, that will not take up any more room than I am already using. If I can play most games without 2 screens(minus the tv), it will work. Thanks in advance for any help or advice.
-rag6