4-Wheeling Birthday Cake

This cake was made for a 10 year old boy, whose birthday was December 10th, as a "clue" about his new 4-wheeler for Christmas.  I left a place at the bottom of the cake for his Mom to add a toy 4-wheeler.

The cake was made using 10", 8" and 6" round cakes stacked off center.  After adding the chocolate buttercream frosting I used my fingers to add the tire tracks and just generally make the surface not smooth.  I wish more cakes could look like mud!  I sprinkled some graham crackers crumbs to add to the dirt effect.  The rocks are chocolate covered bridge mix and the logs are Pirouette cookies.  I made the sign using a plain Hersey's bar.  The trees are sugar cones covered with buttercream frosting using a size 18 star tip.