The concept for Tesla’s driver-assistance system, Autopilot, has been around for well over a decade. But in light of plummeting sales and shrinking profits, Tesla has killed the feature in the United States and Canada for good. To raise much-needed revenue now that car sales have taken a major hit, the company has instead paywalled most of the basic features. The start of the subscription service almost perfectly aligns with that deadline, although it remains unclear what exactly motivated the company to kill Autopilot. More on Autopilot: Tesla Admits That Its Cars May Never Fully Drive Themselves