My nine year old step-son said he saw a snow plow that one could slide the sides out to make it longer. I didn't discount what he was saying because I know there are some new innovations in the snow plowing industry, but I have never seen one for myself. It sounds like a neat idea because if the snow was really heavy you could make the plow length equal to the width of the truck and if the snow was light or if you are moving the banks back and you have to deal with a ditch or a drop off on the side you could extend the plow beyond the width of the truck. Some other benefits would be: you could make it narrower for on-road travel, you could make it wider to decrease plowing time, If you're turning in tight quarters you could make the plow narrower. Some disadvantages would be weight and all of the resulting negative side effects, more moving parts, initial cost, when you're not pushing snow straight ahead (if the bank is off to one side) it twists the plow frame more. Are these types of plows currently being manufactured or would this be a fabricated plow? Does anybody on this forum have one of these?