One of the earliest screw vehicles I've found is the Ice Locomotive, which looks like it would be so heavy that it would sink into the snow. I wonder if any were ever built?
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I don't know if anyone ever made a screw-propelled locomotive, but the Russians did make a screw-propelled vehicle. You can see a video of it in action at:
http://www.youtube.com/watch?v=r4lzLvcowbE
Posted by: Jeff Thompson | November 29, 2007 at 09:15 PM