Here's a summary of my visit to E Ink's booth at SID 2012. E Ink had a very large booth, showing dozens of E-readers and other devices that sport E Ink panels. Lot's of these used Ink-In-Motion, E Ink's segmented displays (rather then the active-matrix ones used in e-readers for example).
The largest display at the booth, and one of the most interesting ones was the hybrid EPD/LED traffic light concept. It uses a large circular e-paper panel, color filters and LEDs (in an outer ring). The hybrid traffic light provides higher visibility in direct sunlight than regular traffic lights (who need to "overpower" the sunlight). E Ink's concept uses 24 LEDs vs 200 in a regular traffic light. Great idea. Just below the traffic light E Ink built a small E Ink crosswalk - showing a nice usage of rugged shatterproof panels.