Not-A-Car Puzzle #300 - Simplicity Manufacturing's "Power Mower of the Future"

[Otto Puzzell]

While cleaning some puzzle bric-à-brac from the hard drive, I found this marvel from a future long-since past. It has a motor, and is self-propelled.

So-what if it's not a car? What's the harm?  :D  For one point: Identify this ..... thing.

Only a complete and specific answer will earn a point!  

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[Otto Puzzell]

Up

[D-type]

Lawn mower for hayfever sufferers?   :D

[RayTheRat]

I found a caption that says, "Power Mowing of the Future, 1957.  On Father's Day, mom finally gets to take a spin in the new lawn mower!"

[sixtee5cuda]

Built by the Simplicity Manufacturing Company, of Port Washington, Wisconsin.

[Otto Puzzell]

I found a caption that says, "Power Mowing of the Future, 1957.  On Father's Day, mom finally gets to take a spin in the new lawn mower!"

My caption was longer, but that's what it is.

[Otto Puzzell]

Built by the Simplicity Manufacturing Company, of Port Washington, Wisconsin.

Additional info is always welcome - thanks!

[RayTheRat]

I found some additional images under a rock I was turning over:

[Otto Puzzell]

 ;D

[ImpishGrin]

Awesome, I want one! (Even though I don't have a lawn...)