According to the University of Washington in Seattle, this is a 1908 Ford Model T, which was produced beginning in early 1908. Their copy is postmarked June 8, 1908, and they believe that this car is one of the first Fords in Seattle.
Another version of this image is titled "On Washington Drive Seattle" in tiny, nearly unreadable print:
It has an unusual "O.T. Frasch Real Photos" stamp on the back:
There are two other images numbered 17:
Reuse of image numbers and different image series make it difficult to know how many images Otto published.