The ornamental design for a modelcarcover, as shown and described.
FIG. 1 is a perspective view of a model car cover in accordance with an embodiment of the present invention;
FIG. 2 is a top plan view of the model car cover of FIG. 1;
FIG. 3 is a bottom plan view of the model car cover of FIG. 1;
FIG. 4 is a right side elevation view of the model car cover of FIG. 1;
FIG. 5 is a left side elevation view of the model car cover of FIG. 1;
FIG. 6 is a front elevation view of the model car cover of FIG. 1; and,
FIG. 7 is a rear elevation view of the model car cover of FIG. 1.
The broken line showing of portions of a model car cover is included for the purpose of illustrating environmental structure and forms no part of the claimed design.