My son works for Valvoline and they were trying for a record number of oil changes today, so I baked them a cake to celebrate! I took an 11'X15" layered sheet and set an extra half of this on the end, topped this with another layered 11"X15". I carved this, put fondant details on, then covered the whole with fondant and painted by hand. The cakes are chocolate with Rocky Road filling (Double chocolate buttercream, toasted walnuts and mini marshmallows) and the top is just yellow with plain buttercream.