I've worked construction for a long time and have never seen one of those on a job site. The last time I saw a rig like that was at a horse ranch. They used it to haul stuff.... bad smelly stuff. Real pain in the a** to have to sit behing it especially if the wind is blowing :) Everybody uses a tractor with a trailer now. Much cleaner and easier to work with, but it doesn't have the mobility of the ole dumper. Here's a pic of a skip loader and a skid steer loader. As you can see they are no where close to the same type of equipment. Ed