Station wagons have evolved from their early use as specialized vehicles to carry people and luggage to and from a train station. A product of the age of train travel, they were originally called "depot hacks" because they worked around train depots as hacks (short for hackney carriage, an old name for taxis). They also came to be known as "carryalls" and "suburbans". Prior to mid-1930s, manufacturers assembled the framing of passenger compartments of passenger vehicles in hardwood and they became known as "woodies."