Supernatural cast share emotional messages as filming on series finale begins
https://www.digitalspy.com/tv/ustv/a33838696/supernatural-messages-series-finale-filming/
This is quite emotional, particularly Jensen's when I watched it this morning.
I did read some where, that some fans think that Sam might sacrifice himself to save the world against God, and Dean ends up on his own. Some even think they have gone ahead with Jensen's ending about selling the car and driving off on a motorbike?