If we were choosing one vehicle to fill every transportation role for a large or growing family, it might be a Toyota Sienna. The Sienna is one of the most appealing minivans available. It's more powerful than ever yet reasonably economical. It's comfortable, responsive and roomy, with flexible seating options and the capability to tow a camper or haul 4x8 sheets of building material, 10-foot 2x4s and big-screen TVs. It's up to the rigors of a Midwest winter, even in standard front-drive trim, and it's available with all the requisite safety features. And it comes in a wide range of models, from reasonably priced and well-equipped to luxury grade, with leather, navigation, DVD entertainment and active cruise control.