It just occurred to me that in G. B. Shaw's play Pygmalion (1912) and the subsequent musical My Fair Lady (1956), the principal characters are Henry Higgins and Eliza Doolittle.

So there's another story about Henry making a lady out of Lizzie. Coincidence? Yes, but could the songwriters have had them in mind as well as Henry Ford and the tin Lizzie? I suppose not, or they would have made it more explicit in the lyrics.

An interesting thought, however.