Update!

So my Lovely & Talented Wife (hereinafter referred to as LTW) has heard from the garage.  The car stopped working because the distributor cap came off.  It seems that whoever did the last tune-up on the car failed to properly secure it.

I can safely say that I didn't do it.  I wouldn't know a distributor cap if it bit me on the ass.  I've never been interested in learning how to repair automobiles; that's what you pay professionals for.  In this case, however, we didn't have to pay them much at all.  Which is just how we like it.