Preface: This is an unscientific experiment on many-many levels. The trailer is not moving. The "road markings" make no sense.

If you watch the videos in detail it does ID them as stationary but the NN seems to be going off 2D vision to determine distance while saying it's the back of a truck, so the side of the semi is placed ahead of where it really is. It's not that objects aren't IDed as stationary (it literally says 'stationary' or even 'oncoming' on green's videos in the AP output), just the NN itself can't cope. I think it's because the NN has been trained where 99.999% of the time the car is behind a vehicle rather than perpendicular when there's an object ahead, so the AP assumes any object in front is in a lane because that's what it has encountered and just goes off the calculated 2D distance of the visible road even if the visible road is beyond the object in front.

The NN seems to be using radar/vision for confirmation of an object, but uses it's own calculations to determine where the object is. This is why I think Teslas can still drive through the sides of semis even though green has shown AP registers semis as objects, specifically 'trucks.'

/r/RealTesla Thread Parent Link - twitter.com