Sure, you can park outside the gates. But you will be asked to leave if you are there after the gates close. It is outside the licensed camping area and against the rules of both the township and County Health Department. The track will be fined for allowing it and it puts their camping permit in jeopardy.
But hey, it's all about being "smarter than the system", right?
BTW: The camping fee is nothing new: this has been policy since the first year camping was allowed in the pits.