The Google self-driving cars are being extensively tested on public roads and have met with a few accidents as well. Of late though, on car was pulled over by the cops for a speed limit issue. The car was travelling too slow.
A Mountain View Police Department traffic officer noticed a huge traffic formation behind a slow moving car. When approached, it was a Google self driving car, that was traveling at 25mph (40km/h) in a 35mph (56km/h) zone.
Under the California Vehicle Code, self drive cars can be operated on roads that have a speed limit of or under 35mph (56km/h), thus the car was on this particular road.
What Google had to say about this incident was that the self drive cars had a restricted top speed of 25mph (40km/h). Also, Google wanted the cars to be friendly and approachable, but never expected a police officer to approach the car we guess.
Google also claimed that after 1.2 million miles of autonomous driving, they were happy and proud that they never received a ticket.