Originally Posted by 93AltimaSE
To make it easily removable you want to see what the laptop can do in terms of docking stations. I think you are gonna have trouble with not buying a screen, since anywhere you would be able to see the laptop would have to be a semi-serious mount job.
the best direction i can think of to look for something that might help is http://www.data911.com/dnmdsdescription.htm . They do basically police grade stuff, they may have a mount like you want. Good luck.