The most fundamental change for 2006 is the expanded installation of the more powerful V6 previously reserved for the Track model and last year's 35th Anniversary Edition to all models with the manual transmission. Other functional upgrades include larger wheels, more responsive power steering, better brakes, improved lighting and added audio features.

Carried over are all those features that make the 350Z such a performance bargain: carbon-fiber driveshaft, drive-by-wire throttle, anti-lock disc brakes vented front and rear with electronic brake-force distribution and brake assist. Add the convenience features that come standard, such as automatic temperature control and a premium stereo even in the base Z, and the price is compelling.

Available as a coupe or roadster, the 350Z delivers racecar handling, rear-wheel drive, and thrilling acceleration performance. The suspension keeps the tires glued to the road through fast chicanes. Bounce over the curbs on a road racing circuit and the Z will hold its line. Styling details like the controversial industrial-design door handles ensure this car will never be called bland.

Nissan says the 350Z was designed to be a sports car an enthusiast can live with every day. While its firm ride, abrupt throttle response, and awkward cup holders don't make it a great place to drink coffee, eat doughnuts, and make phone calls on the way to work, it is a comfortable car with usable cargo space, and getting in and out isn't impossibly awkward. Order a version with the excellent five-speed automatic, and you'll have a commuter for the daily stop-and-go that will still leave a grin on your face after a quick run down a favorite racer road.

Bottom line: The Nissan 350Z more than delivers on the promise of its stellar looks. It's a real sports car with serious GT performance. The Roadster adds wind-in-your hair freedom.