I dreamt that my great-grandmother (known as G.G.) at age 86 was riding on an open-sided train car.  She was sitting with four of her aged friends with their feet hanging out over the edge of the train.  All were dressed in nice, proper old person clothes.  As the train crossed a bridge over a wide channel of water, they jumped one at a time into the water.  two of them bounced off the edge of the bridge and died, but G.G. was one of the three survivors.

[My real G.G. died at 86 of natural causes.]