In all seriousness...don't waste your time in the parking lot.
You'll only develop bad habits, and there's no way you'll be able to duplicate genuine AutoCross conditions.
^^^Worse yet...there's no way to duplicate SAFE AutoCross conditions.
Nobody is going to laugh at you at your first event.
On the contrary, you'll find genuine respect from fellow competitors,
and everyone will be most willing to help and answer any questions you may have.