Just got back.
He has about 20 with more on the way. He gave me one free of charge to screw with. They are based on a 400MHz VIA CPU, with 256MB of RAM. The computer is directly integrated to the monitor. They seperate from the base as one unit. Monitor is a 15" touchscreen, capable of at least 800x600 in 256 colors (probably more). The machines have integrated video, LAN, and sound, and the monitor is not directly connected to the computer electrically (Uses a standard 15 pin). On the motherboard, there is a flash module directly connected to primary IDE, from which XP Embedded runs. There are standard power connectors on the motherboard, so you could likely hook up an HDD and CDROM.
Now, here's the bad part: All together, with cart, it weighs 100lbs. Most of that weight comes from the battery pack/power supply, which is necessary for the thing's operation. The power connection on both the computer and monitor is a mini-din 4 pin connector. One could probably rig something up, though, to work with a PC supply.
Price is still undetermined, but I couldn't imagine him charging much more than $100 a pop. Really not sure, though.