Incredible styrofoam art

The embed above is just one of a set of 11 photos of artwork drawn with a ball-point pen on a styrofoam cup:

I went in to the dealership for my free oil change and saw this cup sitting there. The cashier said that a young man had come in to have some work done and it was going to take about three hours. "I'll just doodle" he said, and grabbed a ball point and a coffee cup. 

Note the above shows the inside of the cup.   Look at the other photos and note how the links of the chain and the other scrollwork is all evenly spaced, and that the letters are drawn in negative with a black pen.

Discussed at Reddit.  The artist is (at least for now) unidentified.