From the Evening Record – May 4, 1912:
MAMMOTH AUTO BODY PLANT LOCATES IN WINDSOR
This building was designed by Gilbert Jaques & Co., architects of Windsor. The plan was for this building to be located on the Davis Farm subdivison, the article doesn’t say exactly where, but it did make reference to a spur line off the Essex Terminal Railway would be brought to the plan. So it must have been somewhere around Hanna/Ellis. The factory was going to build auto bodies out of wood, steel and aluminium.
Add this one to the list of unbuilt buildings in Windsor. I can’t find any record of this place ever having been built.