Tracked pickup truck. A heavily-modified Volkswagen T1 "Kombi"
https://s3-us-west-1.amazonaws.com/h...ked_pickup.jpg
Previously:
https://www.homemadetools.net/forum/...940#post119865
https://www.homemadetools.net/forum/...660#post118278
https://www.homemadetools.net/forum/...7522#post85744