I purchased this remote controlled car as a birthday gift for my 10-yr.-old grandson. His older brother, age 16, wanted to show the birthday boy how to assemble it, but the birthday boy did not want any help. He was able to convince his brother that he did not need any help assembling his gift and he was capable of playing with it without help. I know that sounds selfish of the younger brother, but the older brother is a "Mr. Fix-It."...