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Go racing on the iPad with PadRacer

The Apple iPad is looking more and more like a gaming device--in addition to the world-changing tablet we were promised. But no complaints here, the PadRacer game for the device looks like a perfect time-waster for people who are supposed to look busy. PadRacer (www.itunes.com, $5) is a top-view racing game for four players similar to the old Ivan “Ironman” Stewart’s Super Off-Road arcade game.

At GM, the tail fin is back--but now it's a blade

Tail fins are making a comeback at General Motors Co., although they are a far cry from the saillike appendages of the 1950s. And this time the company is calling them blades. The look, pioneered on the Chevrolet Volt to improve aerodynamics, will appear on other models to boost fuel economy, said Ed Welburn, GM's global design chief.

Porsche 959 prototype to cross the block at Barrett-Jackson

When Professor Helmuth Bott arrived at the fledgling Porsche sports-car company in 1952, he was in his late 20s. The young engineer's first assignment was setting up a gearbox test stand for the company's new all-syncromesh Type 519 transaxle. Thirty-one years later, he gave the go-ahead for the development of a car that was to be the ultimate bleeding edge of what Porsche knew about building a rear-engined sports car.