The ornamental design for a case of a hands-free car kit, as shown and described.
FIG. 1 is a three-quarter top, back and side view of a case of a hands-free car kit that has the design;
FIG. 2 is a bottom view of the case of a hands-free car kit;
FIG. 3 is a back view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a right side view thereof, the left side view being a mirror image; and,
FIG. 6 is a top view thereof.
The broken lines immediately adjacent the claimed areas represent the bounds of the claimed design while the “Parrot” trademark owned by Parrot S.A. of Paris, France, illustrated in broken lines and the remaining broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design. The wire frame lines are intended to indicate surface contour and are not intended to be surface ornamentation.