The email read:
This is the ONLY 'Adams-Farwell' automobile left in existence. They were made in Dubuque, Iowa, between 1890-1913. This one uses a 50 HP rotary engine similar to engines in old airplanes but the pistons are still and the cylinders move. With 50 HP... it probably really scooted down the roads back then !!During the video, the guy exhibiting the car said they have one spare engine, and the Smithsonian has another. They only know of these three engines are left in existence.
The only engines remotely like this that I've ever seen operating were made by home machinists. They're fun to watch.