It has been smooth sailing for Chrysler ever since the company launched its minivan in 1984 and took ownership of the genre. The only other company to challenge Chrysler's dominance has been Ford, whose Windstar briefly became the darling of the critics with its cleaner looks and greater cargo capacity. But that was last year. This year Chrysler strikes back with the first ground-up redesign of the minivan since it was introduced. In hundreds of little ways and several critical big ways, the 1996 Chrysler minivan is better than ever. And better than any other.