I've been having a lot of fun researching, and have discovered that fireballs are fairly common. I did locate this site:
http://www.amsmeteors.org/fireball/fireball_log2010.htm thanks to mee-n-mac. I recorded my sighting there. I just checked back, and there were four others who recorded the same sighting, so at least I know I'm not crazy ... well at least I don't think I am ...
Also, the moderator of the site GravyBoat linked to apparently found my original post here, and published a portion of it, with a request for clarification! I did post a comment there to clarify as well. One other person has posted a follow-up indicating that they also saw the same fireball while driving north from the Manchester airport. There was also a second person who posted, but they were actually reporting a sighting of the fireball the following evening which was seen in the Wisconsin/Iowa area. That fireball was far more dramatic!
As a result of my sighting, and subsequent research, I've now added a whole new dimension to my night-sky watching!