I like that! A locomotive cab simulator. Now add some realistic controls tied to the model's throttle and you're having some serious fun! 
Actually I saw a version of this setup on an HO scale club layout about 15 years ago. They built a wooden cab and a good size TV was installed in the front window. While I didn't get a chance to operate it, I did watch the action for a while.
Someone get Digitrax on the phone, i see a new concept on the way...

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