You'll see how quick and easy this cake is. You can make it with your kids and have a fun time together. First cover the long sponge cake with chocolate cream (you can melt it a bit in the microwave to make it easier to spread). And then it’s time to decorate! Green sour belts as grass, wheel-shaped biscuits, white sweets for the lines on the road, etc. We put the Comic-cars race track around the edge.