As a pastor whose congregtion supports a medical mission to women and children in southern Bangladesh (which I have visited three times) and who was born and raised in north India, I am thrilled with your impressions of Bangladesh.
I hope, though, that others have already pointed out that the painting on the truck (Plate 45) shows NOT a rocket and flag, but rather the National Monument outside of Dhaka. Composed of 7 trapezoids, each representing an episode in the struggle for independence, it is the site of official visits by heads of state and a cherished Bangla icon.
Dhanabad,
p.dale