The all-new 2007 Nissan Sentra is the sixth generation of a car that has been a best-seller around the world. Unlike the first five generations, the '07 Sentra was designed primarily for the needs of North American buyers. That's quite a commitment to the belief that the U.S. is where it's at, for this market.

But we want our small cars big, so the Sentra moves into that territory. Those who want truly small cars have other options: the Nissan Versa, Honda Fit, Toyota Yaris, and all-wheel-drive Suzuki SX4, to name a few.

The Sentra is aimed at Echo Boomers, those kids of Baby Boomers. So if the Sentra is the second car they've owned in their lifetime, it might be a step up in size. Nissan believes that these folks virtually live in their cars, so in designing the new Sentra, they've tried to create a "mobile backpack."