I didn't realize that anyone was selling/buying those, aren't they in the $80,000 price range?
I bet if you made a electric snow plow vehicle with an insulated battery box an a heater to heat while charging you could do rather well, just get some old fork lift battery packs and an extra heavy frame.
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When I die, I would like to go peacefully, in my sleep, like my grandfather did. Not screaming and yelling like the passenger in his car.