Cars is a subtheme of Duplo that consists of 14 sets that as of now ran from 2010 to 2015. As of today,
5816 Mack's Road Trip is the most valuable set in Duplo Cars with an estimated new/factory sealed value of $182.88.
The LEGO DUPLO theme was introduced as far back as 1969 and is designed for children ages 1 to 5. It features DUPLO figures which are much larger than minifigures and DUPLO blocks which are about twice the length, width, and height of a standard System brick. Like LEGO System, DUPLO also has subthemes that are often junior versions of System themes, like Pirates and Castle and licensed themes like Disney and Super Heros.
Summary
Duplo Cars Luigi's Italian Place set 5818 was released on May 12, 2011, retailing for $20, it has since been retired. New, unopened sets are valued at $59, used ones can be found for $18.
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