Czech March industrial output dropped as car production declined, a sign the longest recession on record is stretching into 2013. Output fell 6% in March from a year earlier after a 5.7% decline in the previous month, the Czech Statistics Office said in a statement Tuesday. Automotive production, the Czech Republic’s largest manufacturing industry, fell 15.4% from a year earlier and was the biggest contributor to the total output decline, the Prague-based agency said.