The Buzz | US: Police stop Google self-driving car for going too slowly 

A car built by Google that drives itself around city streets had a brush with the law for driving too slowly.
A police officer in the tech giant’s Silicon Valley hometown pulled over the prototype car Thursday because it was going a traffic-tying 24 mph in a 35 mph zone. The officer spoke with the person in the driver’s seat but issued no citation, according to the Mountain View Police Department. Though the car was driving itself, state law requires a person to be able to intervene when the technology is tested on public roads.
The officer wanted to “learn more about how the car was choosing speeds along certain roadways and to educate the operators about impeding traffic,” according to a department blog post.
The bubble-shaped prototype has two seats. Its top speed is 25 mph.