We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
The steam comes from a package boiler of the type formerly used on diesel locomotives to heat passenger trains. It's essentially an oversized laundry boiler. Like the plow's powerplant, itself a minimally modified first generation booster unit, this is most likely recycled from a first-generation diesel locomotive. The plow blade itself is driven by traction motors also recycled from first generation power.
The Europeans have some very impressive new designs to do this work, but they're not quite up to the snow depths of the Sierras when it's time to call the rotary.