Offer a large screen on the dashboard

I have seen many laptops and even a few cars that have come with screens larger than 10 inches. The screen that comes with MyFord Touch is only 8 inches. Is there any reason that you couldn't put a 15 inch (or larger), vertically oriented screen in place of certain buttons and controls?A larger screen would allow the MyFord Touch system to be even more readable, more usable, and would open up opportunities for additional content the current generation MyFord Touch system can't currently support including web browsing (while in park) and remotely controlling a desktop PC from the car.