I understand that but the time and effort and $$ he will use to design and build an R/C car will end up more than if he just bought one and it would be far less capable. I always find myself wanting to build everything and even the things I buy, I find myself thinking well if they had done it this way it would be better and maybe I could... So I force myself to think is it worth it to build it myself? After all even a lot of the projects that build their "own" start with a commercial platform and work from there. In the end if i can build it far better myself, save lots of money, or can't find something to fit what I need then I think it's worth designing and building otherwise I would rather save my time and $$ for the real project and not turn every component into a project. Just my 2 cents worth.