finding a vehicle that is unlike what you expect, or equipped with something you've never seen before... that's what makes this lil hobby fun. A Roto Ray and a rumble seat

The Roto Ray, it spun in a circle when activated

in the Keystone Antique Tractor Museum

http://carzhunt.blogspot.com/2014/04/tractor-museum-part-3-hard-work-pays-off.html