The 9th Circuit Court of Appeals in Pasadena, California found that a court ruling in a Wal-Mart case last June effectively narrowed the scope of class-action lawsuits. The same ruling was found to apply to the suit against Acura as well. Previously, a district judge in Los Angeles had ordered that California's consumer protection laws could be applied to RL owners nationwide, but the new ruling repeals that judgment. The circuit court also reversed the district court's finding that car buyers could have relied on advertising by Honda about the collision system. The 9th Circuit Court of Appeals found there weren't enough common facts among the plaintiffs' claims to apply the California laws across the board.
At this point, it's unclear how the plaintiffs in the case will respond to the decision.