Tire stores closed (after hours). Not an option. I didn't think that detail pertinent at the time; I stand corrected.
My tire was undamaged, save for the screw hole. If there are roadside services for tire repair on passenger vehicles 24/7 in my county, I'm unaware. Certainly not through my insurance (tow option only - aside from 'roadside assistance' - which posed a problem: My flat was FAR from home and 20 miles from the nearest shop or motel).
I've since learned that many new vehicles do not come with spares, only a can of fix a flat and an air compressor...2 items now on my trunk contents list.
My experience with fix-a-flat is unsatisfactory. I carry tire plug kit now instead.