A 'near-miss' between a Google self-driving car and a Delphi self-driving car during testing in California raised questions about the safety and reliability of autonomous vehicle systems. 

The near-miss resulted from both vehicles attempting maneuvers in the same lane simultaneously. Google's self-driving Lexus RX400h moved into the lane first, prompting Delphi's self-driving Audi Q5 to detect the occupied space and halt its manoeuvre. 

No harm was caused. 

Both companies stated that their vehicles behaved as designed, demonstrating their ability to adapt to dynamic road conditions.

The event highlighted the complexities of interactions between autonomous vehicles and their ability to handle real-world traffic scenarios.