I've had my eye on the Dualcor cPC for a few weeks now. It looks as though it would fit in the 1.5 DIN space of my Vette without having to hack up the dash; although I would need to fab come kind of faceplate/bracket to hold it in place.
There appears to be some confusion as to whether or not the unit will have Wi-Fi and Bluetooth built-in. If it does, it will be a killer device. A bit expensive at $1500, however, cheaper than the OQO with a lot more functionality.