Ok, I plopped down $396 for my new 7" motorized Touchscreen. Here is an ebay link to the item I got:
http://cgi.ebay.com/ws/eBayISAPI.dll...RK%3AMEWN%3AIT
I used it for the first time yesterday (sorry no pics as yet). DarquePervert pointed out that this unit appears to be the same as the DWM 700 (think that is the right model number).
I hooked it up to my CarPC and to my battery. Worked pretty good. I first played around with the motorized mechanism - worked fine. I then booted the computer up with the VGA connected and I was impressed with the clarity of the screen. Although it is only 7" in size, everything was clear and easy to read. Colors were great too. I did not have to do anything at all to my video card as far as drivers are concerned (I am using an ATI 9600XT with 256MB of video RAM)
I did not load the touch screen drivers, and instead just plugged the touch screen in to a USB port. As expected, XP did not have any native drivers, so I put in the accompanying CD and let XP search for the driver and it found it quickly. It was installed and the computer rebooted. Touchscreen worked perfectly. And although an onscreen message stated that once the touchscreen driver was installed the regular mouse might not work, it did work. Both the touchscreen and the mouse worked at the same time! I used the computer for close to 50 minutes, and I never had a problem with the touchscreen - and I never even calibrated it. The package came with a stylus that works really good - much easier than trying to use my fat fingers!
The quality of the unit seems pretty good as it is not flimsy at all. While $396 is alot of money, so far I am happy with the purchase. It was sent 2 day express from Hong Kong, so it did not take long at all to receive. And while the distance could be an issue for warrranty service, so far everything is working perfectly and I have no problems.
I've only had the unit for about a week, but so far I would recommend it highly.