The Passport IQ is NOT a tablet; it is a stand-alone GPS system with built-in radar/laser detection. As simple as that. Portraying it as a tablet is akin to saying a netbook is a desktop-replacement laptop (and even so, that comparison would be even more appropriate for the netbook, given that it runs same OS as a regular PC). This is not a fair portrayal of this device.
People who use a stand-alone GPS unit in their vehicles (Garmin, Tom-Tom, Magellan) will recognize the add-on benefit of a radar detector added to that, because it cuts down further on the clutter and you can display it without cops taking immediate note that you have a radar detector in your car. That alone makes it worthwhile, although the price is a bit steep (however, a standalone radar detector from the same company can run up to USD400, so you get what you pay for).
The author's skewed view of this device as a tablet (implying that it should be what other tablets are), along with his opinion on radar detectors, makes one believe that he has a beef with radar detectors themselves; this is OK as his opinion, but be frank about it instead of hiding it in a "review".