Watch: A vintage look back at the first 100 years of track-type tractors

Where would we be without the track-type tractor? Caterpillar put out this retrospective on the history of the iconic construction and agriculture workhorse back in 2004, the 100th anniversary of when the first track-type tractors crawled their way onto work sites. It's an interesting look back at a machine that has made a huge difference on the world of earthmoving.