20 years of time, nine multi-billion-dollar companies, gobs of customer feedback, and still no one could get this minivan thing right. It sounds so simple: build a big box, put it on four wheels, make it drive nice, and have it cater to seven.Yet look what we get. Dodge's Caravan got the ball running – that is, when it ran. Honda's original Hot Wheels-sized Odyssey was nice, as long as your kids hadn't hatched yet. GM misread the directions and built the world's biggest dustbuster, Volkswagen sent over an upright refrigerator (EuroVan), and Ford had America hauling its families around in a pickup truck (Aerostar). Isn't that illegal?Crash, burn, crash, burn. Who will save us all?Who else?To be sure, Toyota's minivan record has some not-so-mini misfires of its own. The imaginatively-named Toyota Van comes to mind, as does the mid-engined, rear-drive, supercharged Previa since, as cool as it was, the league of minivan autocrossers wasn't exactly bursting with membership. But everything changed with the 1998 Sienna, Toyota's first van to nail every core attribute: space, speed, seating, price, powertrain choice, door count, etc. An accomplishment indeed. Still, a few details weren't quite ironed out.But that was just the first try. The Sienna seen here has been rethought, reformed, and moved out to its new home in Indiana, maybe in the hopes that the heavy-duty Toyotas already living there, the Tundra and Sequoia, can teach it a thing or two about living large.