Cargo is a subtheme of the City theme introduced in 2008. The theme consists mainly of vehicles used to transport cargo and mail, with several sets for each having been released. It reintroduced in 2013 and the sets are divided between those that are post office orientated and cargo orientated.
2013 LEGO Sets
2013 included a number of notable theme releases including the Legends of Chima, The Lone Ranger, Galaxy Squad, Teenage Mutant Ninja Turtles, Jake and the Never Land Pirates and Mickey Mouse & Friends. The flagship release was Legends of Chima with the coincided premier of The Legends of Chima TV Show on Cartoon Network. However, LEGO unfortunately did retire a number of well-loved themes such as Monster Fighters, SpongeBob SquarePants, Cars and Dino. One interesting note is that in 2013, LEGO started changing from 4-digit set numbers to 5-digit set numbers. 2013 was also the year that LEGO release the exclusive Mr. Gold in its collectable minifigures blind bags. This event single handled created one of the greatest investment opportunities for collections LEGO has seen.