Automobiles: Move Over, Speed Racer

Low, flat and stable on curves even at very high speeds, the Mercedes SL63 coupe features a new 7-speed sports transmission. It shifts quickly and responds like a manual transmission, but with the smoothness of an automatic. It packs a 518-horsepower, 6.2-liter V-8 engine, and hits 60mph in a snappy 4.7 seconds. It's comfortable, too; the AMG sport steering wheel features shifter paddles that make it ergonomic between the hands. A Racetimer will keep track of lap times. And there's no need to suffer a chill with the top down; just push a button to allow warm air to circulate through the head restraints like a cashmere scarf ($136,425; www3.Mercedes-benz.com).

Automobiles: Move Over, Speed Racer | World