According to an entry in the Brookline TAB Blog four days ago, an elderly woman saw a man using "a robot and a truck" to clear out a parking lot. The TAB located a picture of the likely robot on another blog and linked to it; it looks like a yellow round dome thing with treads and two big eyes.
My only question: will the robot do a better job of following Asimov's First Law of Robotics than some of the current drivers of the snowplows?
For more information, see Brookline TAB Blog: She just wanted to say thanks for the robot.
For a photo of the robot in question, see Newton Streets and Sidewalks: Sidewalk Snowplowing Solution