When you think of big machines, tractors probably don't top the list. But once you meet Big Bud, that changes fast. The Big Bud 747 isn't your average farm tractor. It's literally the Goliath of ...

Smoke billows from the stack of the steam-powered tractor as it chugs along, sounding like a train locomotive. At a top speed of just under 6 mph, the 150 Case Road Locomotive moves methodically but ...