Tesla is removing the option to pay a one-time fee for its Full Self-Driving (Supervised) driver assistance software, CEO Elon Musk announced Wednesday. Going forward, the only way to access the feature will be through a monthly subscription. The change represents a major break from how Tesla has sold access to the advanced driver assistance suite over the years. It’s also a decision that could have an impact on Tesla’s bottom line, Musk’s ability to unlock the full value of his $1 trillion pay