Tunnel washing truck. 1:13 video:
https://www.youtube.com/watch?v=pWiRWb5xWJc
2:00 video:
https://www.youtube.com/watch?v=OlwOT0e25wI
Previously:
https://www.homemadetools.net/forum/...825#post137094
https://www.homemadetools.net/forum/...765#post133147
https://www.homemadetools.net/forum/...545#post128137
https://www.homemadetools.net/forum/...7790#post86258
https://www.homemadetools.net/forum/...031#post120283
https://www.homemadetools.net/forum/...841#post100173
