Michigan Radio: Tracy Samilton

Thousands of people in Windsor, Ontario, say they are being invaded by an obnoxious noise emanating from outside Detroit. They call it the "Windsor Hum," and it's really two sounds — a deep, very low-frequency hum, like a diesel truck idling in your driveway, and a deep, vibrating pulse that you feel more than you hear.

Paul Schubert and his wife decided to buy a new car last summer — a really fuel-efficient one. After a lot of research, they settled on a Toyota Prius. But there was a problem: They couldn't find one.

The tsunami that devastated Japan in March had dried up supplies of the Prius, which is made in Japan, and a dealer told them they would have to wait — "about four months," Schubert says. "And we thought, well, it'd be, probably, end of November, early December before we were going to have a car."

The Schuberts still had a working car.

Seventy years ago, 70 percent of U.S.-made cars came with a stick shift. The number is less than 9 percent today.

But at least one man is on a quest to reverse that slide.

Eddie Alterman loves automobiles. He's a gear head. He's the top editor at Car and Driver magazine. His whole career, he has watched the sales of cars with stick shifts decline. And when Ferrari failed to offer a manual option for the new 458 Italia, he said, enough's enough. Basta.

Part of a series

Detroit automakers are creating thousands of new jobs amid a sales boom. And as they expand, their suppliers are racing to keep up, adding tens of thousands of new jobs.

At Bridgewater Interiors in Warren, Mich., for example, the pace is intense. Hundreds of union employees scurry to fill a growing list of orders. The factory floor is packed with stacks of foam cushions, seat covers and headrests.

At the 2012 North American International Auto Show, it's clear that the industry's love affair with alpha-numeric designations hasn't waned. There's the ATS, the 700C, the MKZ. Now comes the CTX, a new line of Craftsman riding lawn mowers. They are fast, powerful and loaded with amenities.

"Everybody knows that Detroit's the national stage for cars — Motor City is where autos come from. So this show made perfect sense to come here and launch the tractor," says Onney Crawley, Craftsman's director of brand management for lawn and garden.

This year's auto show in Detroit could set the stage for a shake-up in the fiercely competitive — and hugely profitable — luxury car scene. That's because there's a new kid on the block, and its name is Cadillac.

The General Motors company says its new small, high-performance ATS will allow it to compete for the first time with Audi, Mercedes-Benz and BMW. But getting a brand-new luxury car like the ATS ready for market can be a grueling process.