[TigersEye]

Have you never seen a contrail that resembles a dashed line, because the plane keeps going in and out of different conditions?

But this contrail has no such dashed appearance and the vehicle does not continue on ahead of the contrail. There was a front moving in from the coast that had reached the east slope of the Rockies at about the same time this video was shot. The upper level atmospheric conditions of temp and humidity would have been pretty uniform from off the coast to 700 miles east of LA. The contrail did not continue on overhead or to the east. It simply ended at the top of the spike apparently still miles to the west.

[RobRoy]

I was responding to this comment: “And then just stop out in front of you with no continuing contrail.”

It happens all the time with contrails. That was my only point.

[Ditto]

The contrail did not continue on overhead or to the east. It simply ended at the top of the spike apparently still miles to the west.

Or the plane descended from ultra-cold 30k ft. on its approach to LAX and the contrail disappeared?

Damn, this stuff is so totally tin foil, I can't believe any Freepers are buying in.

Study some perspective drawing or get some common sense!