Ditto with Ebag's comment. I would love to see a 7 or 8" touchscreen that can be mounted in your car and connected to your phone. Wouldn't be much need for a keyboard on such a device in my opinion.
I should point out that when you hit resolutions as high as 1024x768, then the phone's clock speed and hardware come into play. You'll likely need one of the later, faster phones to run 1024x768 without taking a performance hit. We'll provide a list of suggested phones when we get to that point.