The ornamental design for a vehicle, as shown and described.
FIG. 1 is a front perspective view of a vehicle, showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a rear perspective view thereof.
The portions of the vehicle shown throughout the drawing views in broken lines are for environmental and illustrative purposes and form no part of the claimed design.