Austin 7 at the Indy 500

[Tony Griffiths]

The clue is probably in the date of the film: 1937. Presumably that means most of the filming was done in 1936, at which time the production of American Austins had long ceased, and the new Bantam was not put into production until mid-1937, so there were probably no new AAs available.

Good thinking. As all appear to be left-hand drive, they must have been specially built or redirected from, or perhaps purchased in Canada where some left-hand drive Rubies are known.....?