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 rear perspective view thereof;
FIG. 3 is a side elevational view, the opposite side elevational view being a mirror image thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof; and,
FIG. 6 is a top plan view thereof.
The broken line showings of the tires, wheels, emblems on the hood and trunk are for illustrative purposes only and form no part of the claimed design.