Dear Maniacal Driver,
I was instructing my son on the manner in which we leave grocery stores and enter parking lots - touching on the finer points of being a short person unseen to moving cars - when you flew past me, emphasizing my lesson and scaring the bejeebus out of us.
Please be advised: Busy parking lots do not welcome your sort. Kindly slow down or stay home.
(Yes, I considered running your car down, ramming it a bit, but that's not how my mama raised me. Count your lucky stars.)