After digging up more information, I've discovered it's a re-post.
This car was used by George Judd (brother? Father? Son?) to promote Judd's Lock Shop in Kingsport, TN, through at least 1955. The location of the lock shop is now occupied by Lender's Title & Escrow and Title Ventures.com. According to the article, it's called
Humming Bird, not
Hummingbird. Merged, and title fixed.
I see no mention of a direct Austin 7 connection; American Austin engines produced 17 HP, vs. 20 quoted in the article. The later American Bantam '3 main' engine (an evolution of the American Austin) was said to produce 22 HP, so perhaps the RayTheRat is on to something.
Here is an article about the car, and some additional photos: