Tesla Motors and SpaceX founder Elon Musk added to his warnings of a dystopic future straight out of a "Terminator" film on Thursday in a Twitter post on the dangers of artificial intelligence (AI). Citing an article in The Economist on a recent cyberattack preventing internet users from reaching the sites of Twitter, PayPal, Netflix and hundreds of other companies, Musk tweeted that it's "only a matter of time before advanced AI is used to do this." Musk's aversion to autonomous technologies may come as a surprise--his previous comments on the matter aside--for those following his company's embrace of self-driving auto technology, which it plans to roll out next month. Musk has also founded a non-profit called OpenAI dedicated to "democratizing AI technology." Two years ago, Musk called for more regulatory oversight of the technology area, which he described in an interview with the Massachusetts Institute of Technology's AeroAstro Department head Jaime Peraire as humanity's "biggest existential threat."