Maybe the following will help.
If the video has the option for Composit out { usualy a RCA Jack or even a SVideo could be combined } could look at composit monitors. Some where in the posting on this WebBBS some one had a link to a cheep composit input TFT 5" monitor but unknow on quality. Or look at the Sony LCD monitor for the PSOne. Its more in price but has composit in, power is 12v I think and from the reviews not bad on display. Assume 640x480 for the screen if you go for this. Wish they still made either the Motorola 6847 or TI TMS9918A. Easy to hook up and pop out composit rather well.
The other problem is there are temp ranges for LCD screens. Car enviroment are pritty severe. With temp that can get as high as 160 and very cold. This can destroy a lot of room grade LCD. Had some simple ones that had only out for a while in a steel shed and the whold batch went directly to the trash when I pulled them out.
Be carefull on blank "cheep" pannels. Some were special custom for a product and are hard to impossible to interface. Or if there is an interface can run more than the screen.
Tiger had a farely cheep 14.1" one but are out of stock. Problem with the CompUsless was their selling price. Way too high for a 14.1.
And last some states have laws that cover what can be seen on a video display by a driver.
Good luck on the project!
