I decided I didn't want touchscreens unless I needed them. Instead I wanted a multi touch setup that was similar to a capacitive screen and worked 100% with Android. That solution came from Perixx. This company seems to create different ranges of touch and computer input devices. I saw this on Amazon and decided to try them. They worked perfectly with Androids. 99% of its features work. I can zoom, flick, drag, basically anything a capacitive screen can do. Your most likely thinking SO!!!!!! Well this also has a unique integrated keyboard which also works with swipe! This makes one handed use easier.
Another thing I needed is that 3 of these had to be used. One for each passenger, except the driver. Upon investigating the unit, I saw a tinyyyyyyyyyyyyyyyy little button labeled connect. I pushed it, the dongle started flashing, then held power on the pad and that was it. I was able to use all three units at the same time along 3 different computers (I work in IT at work so have 4 computers in parallel.
For the PC I decided to use my tablet as a similar pad to control the media Android unit. I did this with Droidmote server on the media unit and client on the tablet. To control the Windows 7 PC, I use another app called Wifi Mouse. This installs easily on Windows where as Droidmote seems to be geared towards Android and is a hassle to get on Windows. This works flawlessly on both.
Touchpads w/ dongles.
Touchpad in touchpad mode.
Touchpad in keyboard/mouse hybrid mode.