Comment what's the point? it can't work (Score 3, Insightful) 101
how fast is 3D printing? slow as death by clean living. so that's one notch in the handle.
can you 3D print in a moving truck? the platform and system have to be stable like a $6000 turntable. notch 2.
is a 3D print product pretty? flexible? neon colors, black, and white are what you have, assuming you are not slinging molten metal or concrete, the other two mediums in use. not flexible. notch 3, fashionistas in revolt.
so far, it looks like three strikes and Amazon is out. they spend more time on slick PR releases than thought there.