Jet-propelled semi truck.
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Previously:
https://www.homemadetools.net/forum/...493#post170012
https://www.homemadetools.net/forum/...947#post187165
https://www.homemadetools.net/forum/...224#post126496
https://www.homemadetools.net/forum/...974#post179691
https://www.homemadetools.net/forum/...644#post163031