The 1964 Chrysler Marsh Screw Amphibian.

[Roadman]

Cool video, imagine if it had a max wedge.               https://macsmotorcitygarage.com/video-the-1964-chrysler-marsh-screw-amphibian/

[Dakota]

Thanks for sharing Roadman.   That is some cool engineering, even if it didn't make it commercially.

[larry4406]

Quite cool!  Thx.

[CudaMoparRay]

Another unique vehicle that did not make it. OK in the water but probably , excuse the expression, SCREWED up the ground too much.

[1 Wild R/T]

Chrysler was pretty late to the game... First experimental screw driven vehicles were in the 1890's.. Probably the best know units were conversions sold be Woodson in the 1920's....

https://www.youtube.com/watch?v=L3NGCL-efRM