https://techcrunch.com/2021/05/25/tesla-is-no-longer-using-radar-sensors-in-model-3-and-model-y-vehicles-built-in-north-america/

Tesla Model Y and Model 3 vehicles bound for North American customers are being built without radar, fulfilling a desire by CEO Elon Musk to only use cameras combined with machine learning to support its advanced driver assistance system and other active safety features.

Like many of Tesla’s moves, the decision to stop using the sensor runs counter to the industry standard. For now, the radar-less cars will only be sold in North America. Tesla didn’t state when or if it might remove the radar sensor in vehicles built for Chinese and European customers. Automakers typically use a combination of radar and cameras — and even lidar — to provide the sensing required to deliver advanced driver assistance system features like adaptive cruise control, which matches the speed of a car to surrounding traffic, as well as lane keeping and automatic lane changes.