The Nascar form part of the 2008 Christmas presence that my little boy received from her Tita in Australia. Before her flight to the Philippines, she asked hubby what Justin is fond of that's why she gave him this Nascar #48 Jimmie Johnson. Her family gave us a visit last Christmas and she brought with her presence for her nephews, nieces, cousins and in-laws. The big wheel package consists of different sachets of the car parts. Although this kind of building toy is quite hard for then a 4 year old boy I am surprise that he enjoying building the car with me. I laughed when I saw him looking at the instruction paper as if he could understand it and told me to do that and this. It is not easy dealing with the little parts and putting them together to come up with something but on the other hand I find it a bonding moment with my boy wherein we help each other to build his car. Also, this building toy will improve the patience and perseverance of my boy that there are things that really need time to build or re-build.