Not sure if you would be interested in going this route but google double din carputer. I looked at doing this exact thing with my 02. If you look you will notice they make a double din windows based computer with USB, wifi, bluetooth(nice for tethering to share cell phone Internet) and basically functions like the netbooks. They also make stand alone mini towers that you could mount under the seat or somewhere else hidden and a double din screen that mounts up to replace the radio so basically like a desktop you'd normally have. Hope this helps it would be more functional or at least I think so then a tablet.