The news initially came from a reader who sent the auto blog a photo of the fender-bender with another Prius near Google's Mountain View, California headquarters. The accident appears to be minor and no one was hurt, judging by the photo. Jalopnik and many other websites reported the incident as the "first caused by Google's self-driving car," which prompted a quick response from a Google spokesperson.

In a statement sent to , that spokesperson clarified that the car (and Google's software) wasn't to blame for the Prius-on-Prius accident; its driver was.

"Safety is our top priority. One of our goals is to prevent fender-benders like this one, which occurred while a person was manually driving the car," the spokesperson said.

Google's use a combination of video cameras, radar sensors, and laser range finders to see other cars and rely on Google Maps and Earth to navigate the road, Google Software Engineer Sebastian Thrun says in a in October 2010. He also points out that the autonomous cars had trained drivers and software engineers inside during testing.

Naturally if an accident were to occur while the car was in auto-pilot, it could cause some serious problems for Google's project. Let's go out on a limb and hypothesize that the car was to blame, even partially. It would be much easier for Google to have an employee take the fall rather than the software. Not to mention that it would probably next to impossible to prove otherwise.