Tesla Motors CEO Elon Musk has been thinking about bringing autonomous driving technology to Tesla's electric cars. Quoting Bloomberg: "Musk, 41, said technologies that can take over for drivers are a logical step in the evolution of cars. He has talked with Google about the self-driving technology it’s been developing, though he prefers to think of applications that are more like an airplane’s autopilot system. 'I like the word autopilot more than I like the word self- driving,' Musk said in an interview. 'Self-driving sounds like it’s going to do something you don’t want it to do. Autopilot is a good thing to have in planes, and we should have it in cars.' ... Google’s approach builds on a push for the driverless-car technology long pursued by the U.S. military’s Defense Advanced Research Projects Agency, which held vehicle competitions for carmakers and research labs. Anthony Levandowski, product manager for Google’s self-driving car project, has said the company expects to release the technology within five years. 'The problem with Google’s current approach is that the sensor system is too expensive,' Musk said. 'It’s better to have an optical system, basically cameras with software that is able to figure out what’s going on just by looking at things.' ... 'I think Tesla will most likely develop its own autopilot system for the car, as I think it should be camera-based, not Lidar-based,' Musk said yesterday in an e-mail. 'However, it is also possible that we do something jointly with Google.'" Musk later warned not to take this as an actual announcement.