MODULAR HOT WHEELS DISPLAY

Hi All, I have designed this modular type, hotwheels holder, that allows you to expand to your child's never endeing growing hotwheels collection. I also had visioned on using this as a pixel board, If you had a large enough wall, you could map out your favorite automotive manufacturing logo. Could also up scale it and use it as a storage box if you wish. area to where the cars sit is 89mm x 49mm. I have also included an hole in the back of the finger joins to accommodate a 4g x 9mm self-tapping