FILE - A Google self-driving car goes on a test drive near the Computer History Museum in Mountain View, Calif, May 14, 2014.
FILE - A Google self-driving car goes on a test drive near the Computer History Museum in Mountain View, Calif, May 14, 2014.

MOUNTAIN VIEW, CALIF - A California police officer made a traffic stop, but wrote no ticket. There was no driver to give it to anyway.

Mountain View police said in a statement that an officer pulled over a Google self-driving car that was being tested on local roads Thursday.
 
The officer noticed the car going a road-clogging 24 mph in a 35 mph zone and realized it was a Google Autonomous Vehicle. He stopped the car and contacted its operators to let them know it was impeding traffic, but no citation was given.
 
A person is required to sit behind the wheel of self-driving cars.
 
The Google project responded in a blog post, saying it's never received a ticket and adding, "Driving too slowly? Bet humans don't get pulled over for that too often."