A vehicle structure including a roof beam and a first pillar and a second pillar each fixed relative to the roof beam. The first pillar and the second pillar are spaced from each other defining a door opening extending from the first pillar to the second pillar. A front door and a rear door are both disposed in the door opening. A panel is pivotally connected to the roof beam and pivotable relative to the roof beam to a lowered position. The panel, in the lowered position, extends across the door opening from the first pillar to the second pillar.