used a ribbon cutter and cut out sqaures of even size in both black and white and then applied it to the fondant covering.
I found this from the person who made the cake on the link you gave
I made a race track cake recently with this pattern all around it. I used the Wilton square cutter. After they were on the cake, I put a piece of paper over the side and smoothed it over with my fondant smoother. It looked great.
i either use a square cutter to get exact uniform peices, or the wilton ribbon cutter depending on my mood, it is also a really good idea to use the ribbon cutter to mark your cake so you apply the fondant to the cake in the exact right spot as you can always see if they are a bit skewiff!!