I spent most of the night pondering; what did I do to set this fella off to the point of him taking this action?
>>Nothing of any intent on my perceived part: NO previous contact, glances, threats, obscene gestures etc.
And the only reason my tires squealed briefly is I was trying to avoid being hit by another car turning left in the direction I was turning right. The driver of that car was on her cell phone and not paying attention!!
trust me, I move carefully with and without my vehicle in a Costco parking area...and in the store itself too!

The man who assaulted me had some alcohol on his breath, impaired judgement and did something incredibly stupid with a baby on the way soon...IMHO.
I'm fully aware of 2 sides to a story, but with the Costco employee's witnessed statement to police, the officer just shook his head when the statement echoed my details of the incident.