Detroit auto show

BMW Z4 -- 2009 model
The 2009 Z4 loses the quirky, hard-edged styling of the previous generation, getting a more mainstream, curvy look. The two-seater comes with a retractable hard top.
Vehicle type: Roadster
Seats: 2
Base engine: 3.0-liter inline-6, 255 hp
On sale: Late spring
Base price: Mid-$40,000
What's cool: It's a coupe and convertible with an aluminum 2-piece hard top that retracts. Bigger than the previous generation.