Brilliant inventions before their time

Roger Henry sent a link to this historical footage of the Fordson Snow Crawler, asking "If it was as good as it appears to be why did it not thrive?"

Click the image to view

A quick Google search doesn't turn up much about this machine . . . perhaps it was just a bit too specialized and a bit ahead of its time.

Dave Slater responded to Roger's post with a link to this:

Obviously there are still would-be inventors eager to break the land-water barrier . . . at a price.