Perfect winter toy for Chicago: Nissan 370Z

Like all good sports car owners should, most Nissan Z-car owners will put away their summer-rubber-equipped 370Z Roadsters the minute the temps drop, opting instead for winter beaters -- that is, unless you have Nissan’s Chicago Auto Show toy, the 370Zki. The aptly named show car replaces its fickle summer tires for snow-ready skis up front and tracks out back.