Toy or grooming device?

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Often, when I can't sleep, I watch youtube videos. A few nights ago I typed in "shaving bald heads" and up came a video of a guy using this new device to shave his dome. As a bald man I am always interested in ways to, ahem, SHAVE off a few seconds from a time-consuming regimen, and I thought I'd give this a try.

First of all, it's kinda cute, isn't it? Looks like one of the Matchbox cars (specifically, a loader) that I had as a kid.

You simply lather the scalp and -- vroom! VROOM!! -- roll...