Meet the XPO Trainer 2.0: a wheeled push sled that helps you build more strength in your body. The harder your push, the more resistance you get. The XPO Trainer has 3 wheels with rubberized treads, so you can use it indoors and outside. The wheels are pretty quiet.
You can add weight plates for better traction on slick surfaces. The sled weighs 60lbs on its own. You can find it here.