The ornamental design for an automobile, as shown and described.
FIG. 1 is a front right perspective view of an automobile showing my new design;
FIG. 2 is a front left perspective view thereof;
FIG. 3 is a rear right perspective view thereof;
FIG. 4 is a rear left perspective view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a rear view thereof;
FIG. 7 is a top view thereof;
FIG. 8 is a left side view thereof; and,
FIG. 9 is a right side view thereof.
The claimed design is indicated by the relatively dark portions in the figures. The relatively light portions are environmental and form no part of the claimed design.