Tesla CEO Elon Musk has discussed the company's ambitions to build a self-driving car on more than one occasion, and now he's revealed a bit more about its plans. After reports today about a job listing on the Tesla website for an Advanced Driver Assistance Systems Controls Engineer he spoke to the Financial Times, confirming the company is working on a form of autopilot in-house. Expressing his opinion that fully autonomous cars may be a bit too difficult to achieve right now, he said Tesla "should be able to do 90 per cent of miles driven within three years." O