De Dion Bouton steam tractor and luxury coach variety, mostly due to Steve's research

http://feldgrau.info/engines/12851-de-dion-bouton-et-trepardoux above

Steve found the middle picture in the 1902 book "Motor Cars and the Application of Mechanical Power to Road Vehicles" by Rhys Jenkins and copied the bottom picture from the September 26, 1896 issue of "Scientific American Supplement"

but getting the images is only a sliver of the interesting stuff, read the post Steve did about these unusual vehicles http://serviside.blogspot.com/2012/01/beginning-of-end.html