 FACT: Wyatt and Billy are going to the Mardi Gras celebrations in  New Orleans. This indicates that they are traveling in either late  January or early February, given that Mardi Gras usually takes place  in mid February. Despite this, and despite the number of states they  drive through, the men never drive through an area of cold weather.  Many of the characters they meet are wearing summer style clothes,  and the weather is most obvious in New Mexico, where the winters can  be extremely hard with lots of snow.