FIG. 1 is a perspective view of a combined motor vehicle rearview camera system and hitch cover showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a right side elevational view thereof with the left side being a mirror image; and,

FIG. 7 is a reduced perspective view of a combined motor vehicle rearview camera system and hitch cover attached to a motor vehicle. The broken lines showing the motor vehicle are for illustrative purposes only, and form no part of the claimed design.