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Despite a few minor quibbles, the 2014 Infiniti Q50S Hybrid steps up the tech for good fuel economy, handling, driver-assistance features, and cabin infotainment in a premium sport sedan.
The 2014 Infiniti QX70 3.7 AWD gets a new name, but it's the same FX that it's always been. Fortunately, that's a good thing.
The 2008 Infiniti M45x offers some of the most cutting-edge cabin tech at a rock-bottom price, compared with the competition. The car is a good luxury cruiser with some performance aspirations.
The 2008 Infiniti G35 is comfortable in a commute and fun for sport driving, while its cabin tech options are on the leading edge, offering rich navigation, good music options, and Bluetooth cell phone integration.
The Infiniti M35x is a fine example of useful, nongratuitous high-tech luxury.