I put 40 miles on a tundra yesterday in deep snow on rough terrain with heavy winds blowing.  It had a top speed of 80 km/h.  I know because I had it pinned for more than a mile on three occasions.  It was not fast enough to keep up with the other sleds that I was running with but I caught them eventually.  I burnt five eights of a tank of gas.  I doubt that this eco joke would be up to that task.