FIG. 1 is a rear right perspective view showing a snowmobile according to my design;

FIG. 2 is a right side elevation view thereof, the left side elevation view being a mirror image of FIG. 2; and,

FIG. 3 is a top plan view thereof.

Throughout the Figures, the dashed broken lines represent environmental matter and/or unclaimed portions of the snowmobile and form no part of the claimed design. The dash-dot broken lines represent the boundary between claimed and unclaimed areas and form no part of the claimed design. Portions of the snowmobile not shown in the Figures form no part of the claimed design.