Dobbertin Surface Orbiter amphibious vehicle - GIF
Dobbertin Surface Orbiter (DSO) amphibious vehicle designed and built by hot rodder Rick Dobbertin in the early 1990s.
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Previously:
https://www.homemadetools.net/forum/...045#post134149
https://www.homemadetools.net/forum/...273#post130889
https://www.homemadetools.net/forum/...745#post159685
https://www.homemadetools.net/forum/...520#post173912
https://www.homemadetools.net/forum/...064#post172081