What feature does the ad for the Volvo XC90 highlight as unique for that vehicle?

The feature highlighted in the ad for the Volvo XC90 as unique is the roll stability control system. This system is significant because it enhances vehicle safety by preventing rollovers, particularly during sharp turns or sudden maneuvers, which is a crucial concern for SUV drivers. By emphasizing this advanced safety technology, the Volvo XC90 distinguishes itself from many competitors that may not offer similar sophisticated features. Safety is a core value for Volvo as a brand, and showcasing their innovation in roll stability control directly appeals to consumers who prioritize safety and reliability in their vehicles. This focus helps create a strong impression of the XC90 as not just another SUV, but one with specialized capabilities aimed at protecting occupants.