Vintage radio-controlled lawnmower.
https://s3-us-west-1.amazonaws.com/h..._lawnmower.jpg
Previously:
https://www.homemadetools.net/forum/...657#post143508
https://www.homemadetools.net/forum/...623#post143386
https://www.homemadetools.net/forum/...465#post135654
https://www.homemadetools.net/forum/...2421#post76333
https://www.homemadetools.net/forum/...6993#post84808
https://www.homemadetools.net/forum/...799#post119035