As long a history as the Mazda 626 had behind it, it was clearly lost during its last life cycle. Along with the common sedan symptoms of being softly suspended and styled to obscurity, the 626 was underpowered with either engine, none too comfortable, and stuck at the lower end of the quality rankings. It's easy to get away with ignoring emotions in the family sedan segment, but neglect people's needs and you're done for.Two years ago, Mazda got to work addressing all of the above. It's rare for a conventional bread-and-butter car to get such a thorough redesign, but the Mazda 6 shares next to nothing with its predecessor. One side-by-side glance reveals two new engines packing 30 and 50 more horsepower, two new transmissions, a more serious suspension, a striking new body packing more space in every area, and two superfluous digits trimmed from its name. The Miata, which was about to collapse under the weight of Mazda's far-fetched "zoom zoom" campaign, finally has some company. Nevermind what the four doors say; this is a family car made to make its driver feel young again.