Since then, I've made new scans of details of advertisements for Hudson cars and located images of one complete ad along with two others in the series. They are shown below along with other Godwin illustrations, some of which were in the posts noted above. Click on them to enlarge.
I haven't yet found the actual ad this was part of.
Illustration signed by Godwin.
Unsigned, but could have been by Godwin.
Magazine cover or story illustration. I don't have a date for this.