Dimitrios Biller, a former in-house attorney for Toyota Motor Sales USA, Inc. has accused the car maker in a lawsuit filed in federal court in California of illegally withholding evidence in hundreds of rollover injury and death cases in a "ruthless conspiracy" to keep evidence of its vehicles "structural shortcomings" from becoming known. Biller alleges that his complaints to Toyota executives about the illegal conduct cost him his job. Biller also complains that Toyota misled the National Highway Traffic Safety Administration when the government was considering tougher regulations for roof strength. While Toyota has denied Mr. Biller’s allegations, this has created a mess for Toyota which could lead to the reopening of hundreds of cases that were previously resolved through settlement or trial.