Idiots invading my space!!!!!

I had a similar situation at a Lowes in Georgia. Drove my 53 Cranbrook Coupe and parked it well away from any other cars and cart depositories. After shopping, I came out to the lot and see some old biddy finish unloading her cart and then just push it towards my car. It was deliberate at hell. I give a yell and ask her what her problem is (no foul language but if she wasn't an old lady I would've slugged her). Anyway, she just ignores me, gets in her SUV and tears out of the lot flipping me off as she leaves. I was dumbfounded.