This was posted to FB by Rob Greenlee - one of the LEAFs from the Microsoft campus shuttle service. Seems as though MS is going through the process of replacing the current fleet of Prii with LEAFs:
When I was living up there (left that area in July 2011), it looked like they were replacing/adding Ford Fusion Hybrids to the mostly 2nd gen Prius shuttle fleet. It'll be interesting to see if they're adding or replacing and what the mix ends up looking like.