Who is posing in that last pic, the invisible man?
Looks like the roadster in the second picture would present some serious handling problems if that is the wishbone I am seeing behind the right front wheel.
Speedo cable, wishbone is behind it.
What is under the right foot of the guy in the third photo?
That's Lon Chaney Sr. in the top left photo. Boot scraper in the bottom lft. and Claude Raines posing in the bottom rt. (lets see how many get that!)
The man in the upper right corner has a "Hula Hoe" attached to his right foot. He steps with his left foot and kicks with his right foot thus cutting the grass and weeds.
If you look closely at the man sitting on the running board you can see that his right leg is a lot smaller and shorter than his left leg. The device attached to his shoe may have helped him to walk better and maybe it allowed him to reach the pedals so he could drive.