The Ruckus is a liquid cooled 49 cc vs. the Metropolitan's air cooled 49 cc. Plus the Ruckus weighs 17 lbs more than the Metropolitan both wet. Subtract the plastic and I suspect the Ruckus weighs more like 25 lbs more. That is a lot more steel, aluminum, etc.
Plus the Ruckus has this almost legendary story behind it. 18,000 miles for $640 gas.
http://www.superstreetonline.com/fea...ckus-wan-lees/