This is a picture of my son's 16th birthday cake. I made the cake chocolate. I used a small tip to map out a road and left that portion uniced. I then iced green with a star tip all over. I added lines on the road with white buttercream. I bought the little cars at the store. They were a perfect size. The right top corner has a little hill made from the top portion of the cake that I cut off to even it out. He loved it and it was yummy too!