yeah, good luck with that,
that would be a communications nightmare & bluetooth itself would never support it, video & all, sooo..
your not going to do it unless your willing to plug everything in & out manually, or use a real dock. you will need vga out for the screen, all usb docks that have vga use a funky cheap video card that won't even do full motion video, so usb dock is out.
why not a real dock again? dude, this is the best way, close to what you want to do would be to plug everything in on your pass seat, bring all the cords togeather & make a harness, feed from under the seat then plug it in I& out & slide it under the seat. this is not a good idea for way to many reasons for me to go into, just get a dock or get a laptop that can just stay in the car, only options I see here really