In Nanjing, China, during a Tesla Model S test drive (official or unofficial, we're not sure), the electric car collided violently with a Mazda 6.
Specific details are very sparse, but we do know that all of the occupants in the Model S are okay. There's no word at this time on the status of those in the Mazda 6, but its damage looks much less severe.
Lastly, an image of the Model S shows the rear of the vehicle. There's no license plate, which would seem to indicate it's either an unregistered car or perhaps a manufacturer's vehicles.
Source: Car News China