The ornamental design for a surfboardholder for vehicle, as shown and described.
FIG. 1 is a front isometric view of the surfboard holder for vehicle of the present invention;
FIG. 2 is a front view of the invention of FIG. 1;
FIG. 3 is a back view of the invention of FIG. 1;
FIG. 4 is a side view of the invention of FIG. 1, as seen from the left side of FIG. 2;
FIG. 5 is a side view of the invention of FIG. 1, as seen from the right side of FIG. 2;
FIG. 6 is a top plan view of the invention of FIG. 1; and,
FIG. 7 is an exemplary perspective view of the invention of FIG. 1 being used in conjunction with additional holders to secure a surfboard on a vehicle.
The broken lines on FIG. 7 form no part of the claimed design.