How do you snitch on a guy w/ an expired inspection sticker?

I work at Walmart as a Cartpusher. One day I was doing the usual...pushing carts, and I grabbed a cart in this parking spot, and this leaps out of his truck, and the next thing I know yelling at me like I'm some kind of ********. He calls me an idiot, says gd like 50 times, and tells that he's already told me not to grab his cart like a hundred times, even though I've never even met him before. I want to get even...I want revenge. Tonight I noticed he has an inspection sticker that expired in March, and was wondering if I could get him busted. I live in NoVa, if that is of any significance.