The ornamental design for a vehicle, as shown and described.
FIG. 1 is a front and right side perspective view of a vehicle showing my new design;
FIG. 2 is a rear and left side perspective view thereof;
FIG. 3 is a front view thereof.
FIG. 4 is a rear view thereof.
FIG. 5 is a left side view thereof.
FIG. 6 is a right side view thereof; and,
FIG. 7 is a top view thereof.
Any elements shown in broken lines in the Figures form no part of the claimed invention, and are instead included to show environmental aspects of the claimed invention. Also, the broken lines shown adjacent to any shaded portions form an unclaimed boundary of the design.