The Dundreary Landstalker XL is a full-size four-door SUV from Grand Theft Auto Online's Los Santos Summer Special update that is due to appear in Grand Theft Auto VI. The rear of one is visible in the first trailer, parked ahead of a Coquette D10 along the Ocean Drive-inspired road in Vice Beach.
Vehicle data via GTA Wiki (Fandom), CC BY-SA 3.0.