We were passing by South Dakota and it was impossible for us to not attend the John Deere plows at the James Valley Threshing Show. Of course the main attraction was the GIANT 150 Case steam tractor.
The largest agricultural tractor ever built was made in Havre, Mont. in 1978. The Big Bud 747 is nearly double the size of most other farm tractors, requires 11-foot tires and pulls an 80-foot-wide ...