I hear they have come out with a new mamod tractor. Its called the mamod challenger, its a steam roller with DOUBLE ACTION single cylinder piston. Its cost is 140 in the uk which turns out to be 274.22 U.S. They say it has alot of power. Any one who has the cash ( unlike me I'm 13 )would buy the tractor. I'm probably going to wait till it gets on eBay before I buy one.