Such fuel pilfering cases are up in Broward County, with 16 people charged so far this year compared with 10 last year. Between 2013 and 2017, only seven were charged. The Florida Highway Patrol’s Troop E, which patrols Miami-Dade County, has seen a proliferation, detaining more than 30 vehicles with so-called fuel bladders, or concealed fuel compartments, in the two years since troopers ran across their first modified truck.