I've been trying not to post in this thread, but feel like I need to. If I've broken any laws, which I guess I will find out soon enough, it certainly wasn't intentional.
In my second year of doing this, someone said they thought there was a limit of 5 cars per year that could be sold, so the next time I was at the DMV I asked. They told me that as long as the cars were registered in my name there was no problem and every car I have ever sold in my life has been registered in my name, so I don't believe I have broken any laws. Hopefully, what they told me was correct and based on what Koda posted it appears that it was. Based on what the DMV told me, I've never had a reason to even give it a second thought.