Sounds like a few of us Minnesotans are around and about...
Mike and I are two cars (zero Contours... but oh well) then the other two I'm seeing here... that's a pretty good nucleus for a caravan right there.
We could start from my place in Apple Valley or nearby (easy access to cty 46 and MN52). I have found it is quicker to drive 52 to Rochester and I-90 than to swing up north and take I-94.
No offense to Iowans... but I would rather meet up with them on the route than trek down there Wednesday night.