The ornamental design for a vehicle, as shown and described.
FIG. 1 is a front, left side perspective view of the vehicle of the present invention;
FIG. 2 is a left side view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a front view thereof; and,
FIG. 7 is a rear, left side perspective view thereof.
The even broken lines shown in the drawings illustrate portions of the vehicle that form no part of the claimed design. The dash-dot lines represent boundaries of the claimed design and form no part thereof.