Super Bowl fans may have to go without guacamole this year if avocado farmers in Mexico cannot send their fruit to the United States because of a prolonged fuel shortage. Mexican producers ship thousands of tons of avocado to the United States in late January every year. But the Mexican government’s efforts to clamp down on years of mounting fuel theft has a prompted a week-long fuel shortage that has left many states in central and western Mexico high and dry. Among those states is Michoacan, the country’s main avocado grower. Producers there expect to ship 120,000 ton for this Super Bowl.