Cycle cars were all the rage back in the teens and twenties. And they continued their popularity well into the the thirties -- in France. (Why is it the French are always a little different?)
But the concept of making your own car (or boat, or plane) is something that still grabs people's attention.
This is a "How-to" article from the January 1932 issue of How to Built It magazine. It kind of makes you wish you had a "junked outboard motor" tucked away in the back of your garage.