Four of five have real trunk-looking trunks, and this is about the end of that era.
From the Shorpy blog: http://www.shorpy.com/node/11699?size=_original
I wondered whether maybe in carriages, pre-automobile, there was a box for the driver to keep things in. I don't know, but if anyone does know, please leave a note!
Wikipedia has an article on glove compartments. There's more, but I liked this part best:
A glove compartment is occasionally referred to as a "jockey box," especially in the U.S. Upper Rocky Mountain states such as Idaho and Montana, but is found as far south as Texas. In South Africa, it is called a "cubby-hole". In Turkey, it is called "Torpedo Compartment".
According to the BBC Four programme "Penelope Keith and the Fast Lady" it was Dorothy Levitt who first coined the phrase 'glove compartment' as she advised motorists to carry a number of pairs of gloves to deal with many eventualities.