Rewatched it slow mo. Speculation judgement day is happening in the movie as they are fleeing to Mexico which is outside the fallout zone. Plus looks like refugees later in the clip.
The hybrid she is from the future, looks like an arrival scene when she is naked. She is probably a machine vs a hybrid but it looks like they are drawing on elements of T3 and Salvation. For example she thinks she is human, the new bad Terminator seems similar to the T3 T-X, if Judgement Day is happening that's from T3.