There used to be this assclown that would drive right past an unloading school bus everyday after work. We must have similar hours as he'd always be there when I was. I started leaving 5 minutes earlier and get behind this bus and right when it'd get to the drop off where this asshole would be I'd pull into the center of both lanes, blocking that shit off. This dude would get so mad, honking and flipping me off and shit. I'd just smile at him. One time he got out of his car and started walking up to mine(behind this bus mind you) and I got out of mine. I'm 6' 3'', 225lbs. He was a about 5' 9'' 160lbs or so. He started walking up, saw me get out and quietly turned back around and went back to his car and waited. I did that shit everyday until I moved away. Good times.
OP, you made a mistake. The fact that you feel so shitty shows that you have regret and you'll be more mindful in the future. It could have been worse, thank goodness it wasn't. I guarantee you'll pay more attention now.