Fuel is rapidly becoming one of Bolivia’s scarcest commodities. Long lines of vehicles snake for several kilometers outside gas stations all over Bolivia, once South America’s second-largest producer of natural gas. Some of the queues don’t budge for days. While frustration builds, drivers like Victor García now eat, sleep and socialize around their stationary trucks, waiting to buy just a few liters of diesel — unless the station runs dry. “We don’t know what’s going to happen, but we’re going to be worse off,” said García, 66, who inched closer to the pump Tuesday as the hours ticked by in