Waymo has traded in the pod car for more practical wheels.
In a blog post Monday, the stand-alone company spun out of Google's self-driving car project said it has retired its koala-faced prototype, developed in 2013 and nicknamed internally "Firefly."
The decision comes as Waymo expands its fleet of self-driving Chrysler Pacifica minivans, offering rides in Arizona as part of its "early rider" program.
The Firefly played a primary role in Waymo's early history. It marks one of the first attempts to design a vehicle without driver controls -- a new-age challenge that Google turned to a consumer electronics designer to tackle. It was also the vehicle in which Waymo performed its first unsupervised self-driving ride in 2015.