We actually wish it was a little bigger. When we travel with the kids and dogs its a bit cramped. Sadly the next step up is a full size van or a SUV, as GM no longer makes the Astro/Safari which I think would be perfect for us.
I fear with all the global warming and gas price hoopla going on that soon the oddy will be the biggest thing you can get. At that point, we (my family) is screwed.