Last week, Musk said on another call Tesla would soon release an upgraded version of “Full Self-Driving” software allowing customers to travel “to your work, your friend’s house, to the grocery store without you touching the wheel.”A video currently on the company’s website says: “The person in the driver’s seat is only there for legal reasons.As part of the latest probe, Justice Department prosecutors in Washington and San Francisco are examining whether Tesla misled consumers, investors and regulators by making unsupported claims about its driver assistance technology's capabilities, the sources said.Officials conducting their inquiry could ultimately pursue criminal charges, seek civil sanctions or close the probe without taking any action, they said.The Tesla website also cautions that, before enabling Autopilot, the driver first needs to agree to "keep your hands on the steering wheel at all times" and to always "maintain control and responsibility for your vehicle.”Barbara McQuade, a former U.S. attorney in Detroit who prosecuted automotive companies and employees in fraud cases and is not involved in the current probe, said investigators likely would need to uncover evidence such as emails or other internal communications showing that Tesla and Musk made misleading statements about Autopilot’s capabilities on purpose.SEVERAL PROBESThe criminal Autopilot investigation adds to the other probes and legal issues involving Musk, who became locked in a court battle earlier this year after abandoning a $44 billion takeover of social media giant Twitter Inc, only to reverse course and proclaim excitement for the looming acquisition."