31 flavors? That's for wimps...

I'm looking to see if anyone else has weird time-conflicts that might complement mine.

It turns out I have an awkward conflict with Baitcon this year that, if I am to honor it, would require that I be back in Boston by about 3pm Saturday. I'm thinking of many ways this might work.

-It's possible (though admittedly kind of insane) that I could come back for my Saturday evening event, then *return* to the con, but I wouldn't want to do the extra round trip in my mini-van. My mini-van has lots of people/cargo space and gets poor gas-mileage. I could drive someone's stuff down, and drive their fuel-efficient car back for the round-trip, for instance.
OR
-Maybe there's someone who wants to go, but can't get out of Boston until Saturday evening, and would ride back down with me.
OR
-I could just go for the one night, but then either palmwiz would need a ride back, or he would ride his bike back and his stuff would need a ride back.

Anyone have any transportation needs that dovetail with any of this in an interesting and helpful way?