Problems included a penchant for picking up dirt and fingerprints (the price you pay for a beautiful glossy face, we suppose), a cramped nav key layout with the tricky touch-sensitive Navi Wheel front and center, audio performance that wasn't bad but was expected to be far better in light of the dedicated DSP, and a "shovel"-like feel in the hand, a symptom of the phone's generous dimensions.

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Run on an eight-inch screen with a similar screen faceplate behind the steering wheel, the Cadillac User Experience allows touch-based feedback (see the demo in the video above), vibration-oriented lane departure warning and (finally) a recognition program that responds to normal spoken requests for directions or music.

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The main control surface is wide enough, in fact, that we could comfortably put three fingers on the top of the mouse, using the middle to control the mouse wheel and DPI sensitivity adjustment rocker (a nice touch in and of itself) without ever moving our index and ring finger from the all-important trigger buttons.

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Its novel touch-sensitive display is reminiscent of the iPod's nifty scroll wheel.

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The Storm posed a special challenge for RIM because the company's operating system had always been tailored to a keyboard and click-wheel or track-ball for navigation, rather than a touch screen.

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Standard features include leatherette seating, a 7-inch LED color-touch radio display, automatic climate control, remote start, power windows, steering wheel radio controls and no less than 10 air bags.

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Garmin K2 features a 10-inch glove-friendly multi-touch screen at the center of the dash and a digital and reconfigurable 12- inch instrument panel behind the steering wheel.

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