I took the last bus from Parque Central in Havana a couple of days ago. Four local women got on at the same time and got off along the Malecon. A few minutes later a vehicle passed by and someone shouted a messge to the bus driver. He pulled over, went up top where the women had been, and brought down a shopping bag. Piecing together what happened, I think the other driver said one of the women had tried to stop the bus from pulling away because she had left something behind.
At any rate, the driver turned around as soon as he was able, headed about a mile back the way we had come until he saw the women on the sidewalk. He stopped, got the shopping bag and gave it to the woman.
She was very greatful but I don´t think they knew each other.