I have 2 rupp GO-JOES about to go on ebay. one is a prototype from rupp factory, and other is a fuel injected 295cc type.
prototype :
perfect seat,
flawless white body
experimental clutch and pulley set-up.
no motor (think they tried a horizontal motor first)
no gas tank
rusty hubs
no wear tires
original handle bars and break controls
fuel injected:
*rough body, missing nose and bumper bar
*only has one break, needs a strap and plate to support
*has a bike handle bars moded to fit
*has long gas tank "snowmobile"
*all tires hold air
*leak free exhaust that points to earth
*hand made large seat with hole for gas tank fill
*belt driven variable pitch clutch combo
one I purchased about 8 years ago on ebay, the other was found in a old barn in Ohio 2 years after that one. I have a few other odd mobiles recovered from same barn if interested.