PREHEAT oven to 325° F. Line 15 x 10-inch jelly-roll pan with foil; grease lightly.
CRUMBLE two whole bars of dough into prepared pan. Using fingertips, pat dough gently to fill the pan.
BAKE for 15 to 20 minutes or until light golden brown. Cool completely in pan on wire rack. Remove from pan using foil handles, remove to cutting board. Carefully peel away foil. Lay back down. Cut away edges of dough to form a 14 x 9-inch rectangle.
CUT a 9-inch square. Cut this square into 4 even rectangles. Cut each rectangle into 5 pieces. This will give you 20 rectangles for the car bases. From the remaining 5 x 9-inch rectangle, starting from 5-inch side cut 4 even strips. Cut each strip into 5 pieces. This will give you 20 smaller rectangles for the car tops.
TO ASSEMBLE CARS, frost tops of car bases and top with car tops. Frost or outline tops with additional frosting. For wheels, dip Spree candy into frosting and place on cars. Decorator icing can be used for headlights and to adhere cinnamon candy tail lights.