Abstract: An aerodynamic vehicle attachment is disclosed that includes a body being triangular and having a base, a first sidewall, a second sidewall, and a face. The base has a base contour, and the base, the first sidewall, the second sidewall and the face define an interior storage compartment. A lid covers the interior storage compartment and has a lid contour and a lip extending upward external relative to the interior storage compartment. A hinge is coupled to the face of the body and the lid, and has a fastener. The fastener is configured to removably couple to an outer surface of a top of a tailgate of a vehicle so that the aerodynamic vehicle attachment is coupled to the outside of the vehicle.