As I rocket across the desert outside Phoenix at 120 mph, I'm surprised by my test car's stability. I'm driving the legendary 1955 Mercedes 300SL Gullwing-the car that inspired the real reason for my trip west: to test Mercedes' new flagship sports car, the SL500 hardtop convertible.
The reputation of the original SL has cast a long shadow over subsequent models. The all-new 302-horsepower SL500 carries the banner high. Like all German cars, the SL's top speed is electronically limited to 155 mph, far faster than anyone should drive on American highways. Even so, the car gives you the sense that it could handle such velocity, thanks to a smooth 5.0-liter V8 engine, an active suspension that soaks up bumps and ripples, and a new brake-by-wire system that trims 3 percent off the SL's stopping distance at highway speeds.
More powerful versions are coming as well: The 469-hp SL55 AMG is scheduled for this fall; the V12-powered SL600 will arrive late next year. The 2003 SL500 starts at $85,000.
Technology Quotient: 20 points per category, 100 possible in total
Engine & drivetrain: 13
Suspension: 17
Safety: 17
Electronics: 19
Materials: 15
TOTAL: 81

140 years of Popular Science at your fingertips.
Each issue has been completely reimagined for your iPad. See our amazing new vision for magazines that goes far beyond the printed page
Stay up to date on the latest news of the future of science and technology from your iPhone or Android phone with full articles, images and offline viewing
Featuring every article from the magazine and website, plus links from around the Web. Also see our PopSci DIY feed
The 6th annual Invention Awards are here, from an inflatable tourniquet to a better lobster trap to spring-loaded hocket skates. This issue is all about the celebration of invention.
Plus: Making synthetic biology breakthroughs in a garage, building a constantly-moving ping-pong table, and a ridiculously overpowered barbecue.