Mike -
Along those lines, I've considered marketing a special type of helmet for motorcyclists and other open vehicle drivers. It would be a full face helmet with a black face shield. The helmet itself would be finished in exactly the same hue as the face shield so that the edges of the shield were virtually invisible.
Upon ordering the helmet, the purchaser would provide me with a photo of his/her face, displaying any expression they choose.
Then I would create a digital tranfer that included the facial image surrounded by what would appear to be the leather liner of a helmet opening.
I would then mount the transfer to the BACK of the helmet, then clear coat it.
The effect, of course, would be that anyone observing the wearer would think that his/her head was turned 180 degree from the direction in which he/she was traveling.
Anyone who has an opinion about this project, pro or con, please feel free to post it, BUT to sharpen your perceptions of the idea you must, like me, consume six Guinness Extra Stout before doing so.
Have a good weekend.
TMc