Vehicle aerodynamic altering system and method

A aerodynamic adjustment method:

• transitioning a tonneau cover from a lowered position to a tilted position to reduce a drag coefficient of a vehicle, wherein a cargo bed includes opposing bed walls, wherein the tonneau cover includes wedge-shaped sides that are inboard the bed walls and are raised above the bed walls when the tonneau cover is in the tilted position.

A vehicle system, comprising:

• a tonneau cover;
• and
• an actuator assembly that transitions the tonneau cover back-and-forth between a lowered position and a tilted position, the tonneau cover covering a cargo bed of a vehicle when the tonneau cover is in the lowered position and when the tonneau cover is in the tilted position, wherein the tonneau cover includes opposing side panels that extend downward from a top into the cargo bed when the tonneau cover is in the lowered position, the opposing side panels positioned inboard of bed walls of the cargo bed in the lowered position and raised above the bed walls in the tilted position.