Tesla Inc. (NASDAQ:TSLA) and SpaceX CEO Elon Musk updated his 2020 forecast regarding the future of electric and fully autonomous vehicles. What Happened: On Friday, Musk responded to a video about his 2020 prediction on the future of electric and fully autonomous cars. In the video, Musk can be seen predicting that by 2040, all cars produced will be electric and fully autonomous. “As it is right now only a couple of percent of new car production is electric and at least right now no new car production is fully autonomous. But 20 years from now, probably essentially 100% electric, 100% fully a…