A worker stands in the cab of the Mayan Train during the inauguration ceremony of the Cancún-Palenque route at Cancun station in Cancún, Quintana Roo state, Mexico, on Dec. 31, 2023. The Mayan Train, emblematic work of President Andres Manuel López Obrador, began operations Friday with a promise of prosperity for one of the most impoverished regions of Mexico and under accusations of having devastated the environment.