The ornamental design for a vehicle, as shown and described.
FIG. 1 is a front and right side perspective view of a vehicle showing our new design;
FIG. 2 is a front and left side perspective view thereof;
FIG. 3 is a rear and left side perspective view thereof;
FIG. 4 is a front view thereof.
FIG. 5 is a rear view thereof.
FIG. 6 is a right side view thereof, the left side being a mirror image 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, but are instead included to show environmental aspects thereof. Also, any broken line shown adjacent to a shaded portion forms an unclaimed boundary of the design.