Casting. Note that the Model 3 rear is a bit of a pathological case. In his teardown, Sandy Munro had a lot of good things to say about other parts of the car,

Casting. Note that the Model 3 rear is a bit of a pathological case. In his teardown, Sandy Munro had a lot of good things to say about other parts of the car, but considered the tail end to be a horribly engineered overly expensive mess. So it looks so good because they started with the unambiguously worst piece in the car, and made it really good.