A wing assembly for a vehicle includes a pivotable elongate wing member. The wing member extends from a first end to a second end, and is configured to pivot relative to a pivot axis between a first position and a second position. The pivot axis extends from the first end to the second end. The wing assembly further includes a first endplate pivotably coupled to the first end and a second endplate pivotably coupled to the second end. The first endplate has a first endplate position relative to the pivot axis, and is configured to maintain the first endplate position independent of wing member position. The second endplate has a second endplate position relative to the pivot axis, and is configured to maintain the second endplate position independent of wing member position.