Nissan persuaded a federal appeals court on Friday to decertify 10 class actions accusing the Japanese automaker of selling cars and SUVs with defective automatic emergency braking systems that caused vehicles to stop suddenly for no reason. The 6th U.S. Circuit Court of Appeals in Cincinnati said it was improper to let drivers of 14 Nissan models sue in groups under the laws of 10 individual states simply by claiming that the braking systems did not work. Drivers claimed they experienced "