Texted our meteorite-loving friends; whl encouraged us to file a report at the American Meteor Society site. He has been checking other reports during our progress down the highway-- he says ericcoleman also spotted the bolide from Iowa.
We were returning from lunch with the other half of Clan Heterodyne. They are in one part of Illinois over the holidays, we are in another-- but if we both drive a ways, we can meet in Springfield. Mighty good to see them. Didn't know this journey would turn cosmic.
Edited to add: Amateur astronomer Tim Cline appears to have captured footage of the St. Stephen's Day fireball from Williamson, Iowa. I'll try to embed it below, but I fear it may disappoint me.