In advance, tint 7 oz. fondant black and 2 oz. gray. Add 1/2 teaspoon Gum-Tex to 5 oz. black fondant and 1/8 teaspoon Gum-Tex to 2 oz. gray fondant. Roll out black fondant with Gum-Tex 1/4 in. thick and use largest Round Cut-Out to cut 4 tires. Cut out center of tires using large opening of tip 127. Roll out gray fondant 1/4 in. thick and use large opening of tip 127 to cut 4 hubcaps. Imprint spoke lines in hubcaps by slightly rolling toothpick on its side. Inlay and attach hubcaps in tires with damp brush. Use small opening of tip 2A to cut 4 center circles for hubcaps. Attach hubcap centers to hubcaps with damp brush. Let tires dry on surface dusted with cornstarch. Reserve remaining black and gray fondant.
Bake and cool cake using firm-textured batter such as pound cake. Trace side pattern on one side of cake with toothpick; reverse pattern and trace other side of cake. Trim cake following pattern. With icing, attach portion of cut cake to extend front hood 1 1/2 in. Cover double thick cake board and craft blocks with foil. Prepare cake for rolled fondant by lightly icing with buttercream. For raised portion of hood, roll fondant 1/8 in. thick and cut following pattern; position on cake. Cover entire limo with fondant; smooth with Easy-Glide Smoother, so that raised portion of hood shows through. Roll out remaining black fondant 1/8 in. thick; cut all windows using patterns and paring knife. Attach windows to limo with damp brush. Use paring knife to score around windows, doors, hood and trunk. Roll out white fondant 1/8 in. thick; cut 1/8 in. wide strips to frame windows; attach with damp brush.
Place cake on covered craft blocks. Place 3 in. covered craft block pieces under front and back area of cake in an axle position; place 6 in. long covered craft block under center of car. Roll out reserved gray fondant 1/8 in. thick; trace and cut grill using limo front pattern. Score grill lines with knife. Cut two 1/8 in. wide gray strips and attach to grill with damp brush. Attach tires to cake with damp brush. To make fenders, cut four 1/2 in. wide x 4 in. long pieces of white fondant and trim edge for beveled effect; attach above wheels with damp brush and trim to fit. Tint portions of white fondant red and yellow. Using patterns, cut out large and small taillights, headlights, running lights, door handles, front and back bumpers, trunk handle and license plate holder; attach with damp brush. For front and back bumpers, headlights and large taillights, wrap extra fondant around sides. Position ornament.
*Note: Combine Red-Red and Christmas Red to achieve red shade used. Combine Lemon Yellow and Golden Yellow to achieve yellow shade used.