To celebrate the milestone, a new design concept called Metro Isan has been created for Somtum Der Saladaeng. Developed by Saran Yenpanya, it draws inspiration from truck art which expresses the homesickness of Isan truck drivers, who long for the familiar sight of a rural landscape. Saran has adapted truck art and transformed it to match with Somtum Der’s DNA of being classic, fun and casual.