Has anyone ever heard of these? Saw one at a yard sale today. The only problem was the seller was selling it for the father in law and didn't know much about it. Said he used it in his RV. It has a gas motor attached which I wouldn't want. Asking price $75. It looks like it has a III on it (3 speed internal hub?) Just curious since there is very little info when you try to google it. It looked fairly clean and the tires were okay. The attached motor looked very grimy though. Thanks for any info.