Yeah, Ive got a book PC under the front seat hooked up to a nice Kenwood touchscreen LCD. In my book its still not that easy to navigate on the little LCD screen (especially with these damn mud terrain tires on my 4Runner that shake the car like madd) - but I agree it wouldnt be that much easier on a handheld - but I am sure it will be easier on the 3 bateries I have to run the rest of my stereo crap in there.
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