Tractors aren't small to begin with, so Big Bud, the world's largest, is particularly huge. The story behind it and what it's capable of are astounding.

Big Bud Tractor Roars to Life After Farmer’s Awesome Restoration Alan Brecka woke a KT450 from 40 years of slumber and restored the classic from powertrain to paint.

Bud Nelson, the shop foreman, and Hensler had built a line of tractors that bore Nelson's name. The original Big Bud tractors were produced in the early and mid 1970s.