Mac Mini DC-DC Power Supply

I thought I was going to have to use an inverter to get the power to the Mac from a 12 v battery source, but thanks to Carnetix they've developed the CNX-P1900 for $100. Also, Tom's Hardware Guide reports the mini's power draw to be around 20-28 Watts. I haven't shown the pictures yet, but a prototype of the mini mac mobile platform is nearly finished. I've used simple hobby wood for now until the design is finalized. The last nagging issue before the software code is developed is the USB camera issues on the mac. To my disappointment, I've only been able to capture from one USB camera. This may be enough for awhile, but I was going to have 2-4 cameras. I also may rethink this since the iSight is a lot higher quality than my quickcams and it uses firewire. More on the design and architecture will come this weekend. So long, until I post again.