The ornamental designs for a vehicularflagpole, as shown and described.
FIG. 1 is a front view of an embodiment of a vehicular flag pole;
FIG. 2 is a rear view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a perspective view thereof.
The broken lines in the drawings illustrate portions of the vehicular flag pole and form no part of the claimed design. The dash-dot-dash broken line illustrates the bounds of the claim.