The ornamental design for a collapsibletable for a vehicle, as shown and described.
FIG. 1 is a front perspective view of a collapsible table for a vehicle showing our new design;
FIG. 2 is a left side elevation view thereof;
FIG. 3 is a right side view elevation thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a front elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines in the drawings illustrate portions of the collapsible table for a vehicle that form no part of the claimed design. The broken lines illustrating portions of a vehicle show environmental structure that forms no part of the claimed design.