This could be considered the greatest thing ever invented... or the stupidest thing ever invented. Northern redneck saw blade ice sled FTW.

At first glance, you know that has to be a one-off invention. There's no way OSHA would approve such a tool, or a facility to manufacture such a kludge.

Described as:

This ice sled, used for transportation across ice, utilizes a John Boat and metal pipe runners. The old gas engine has a centrifugal clutch that engages the large saw blade that bites into the ice and gives it forward momentum. Forerunner to snowmobile.

And now I kind of want one for that 'once-a-decade' period of time that Medicine Creek freezes thick enough to run something like this on...