In this video, you will meet the TET-100, a tractor of Soviet design that can transform into a different kind of tractor. Calum G. describes "one of the most unusual vehicles I have ever encounted," able to switch between wheels and tracks so that it would be both roadworthy and fieldworthy. Major props to the [&]

https://boingboing.net/2020/08/25/weird-soviet-tractor-transform.html