Very early on, Tesla used lidar radar in addition to optical sensors. However, they only use optical sensors today and have for a while. Like many of the poor decisions at that company, the change to optical-only was made at Musk’s demand.

Edit: misremembered, it was radar not lidar as pointed out below

At least the HHR had a functional rear-view mirror

Lol, so much for the instance’s only rule: “Be thoughtful, act responsibly, and treat others with respect.”