Remind us again why Americans don’t like station wagons. Is it because we don’t get the good ones like the new Audi A6 Avant? This more practical version of the handsome ’12 A6 sedan is coming out in Europe later this year, powered by engines like the superb 3.0-liter turbo V6 and the excellent 3.0-liter TDI diesel. Maximum cargo space is 59.3 cubic feet, and the tailgate is gesture-activated. Just wiggle a foot and it opens. It may look like you’re auditioning for So You Think You Can Dance, but it can be really useful. Audi, what would it take to reconsider?