Where the need for extrinsic evidence to interpret an ambiguous contract provision in a form contract did not necessarily defeat commonality in a class certification.The 7th U.S. Circuit Court of Appeals reversed a decision by U.S. District Judge Tanya Walton Pratt, Southern District of Indiana.NextGear Capital Inc. provided lines of credit for financing the operations of used car dealerships. Red Barn Motors Inc., Platinum Motors Inc., and Mattingly Auto Sales Inc. operated used car dealerships and were solicited by …