I have Yakima crossbars and a Thule tandem rack (just like the ATOC Tandem Topper) that I can put on the Mazda van or Vibe but it is so much easier to just put a bike or two or three inside the minivan. The tandem or long wheelbase 'bent fit (one at a time) right down the middle. This is likely our last van, so I'm taking advantage of it.