[DoughtyOne]

This is the photo I was referencing.

Cars on both sides of the trestle.

[NOVACPA]

Agree.

The concavity is towards the photographer, so cars being inside the cup doesn’t initially make sense.

If speed is the culprit here(and it may be), then it would make more sense for the cars to have fallen outside the cup (off to the left of the tracks).

[Raycpa]

He could have breaked too hard going into turn.