U.S. Immigration and Customs Enforcement has slapped a hold on a Guatemalan caught speeding on the Florida Turnpike in Sumter County. Mario Perez, 32, of Chamblee, Ga., was driving a black Ford Explorer at about 3 a.m. Monday traveling northbound near the Okahumpka Service Plaza traveling at 85 miles per hour in a 70 mph zone, according to an arrest report from the Wildwood Police Department…