[Calisport]

I move to the side when I see a golf car approaching me from behind and wave them on. I notice a couple of times I needed to pass some slower golf cars in front of me for about half a mile. I put on my left blinker, proceed to pass them on a straight-away, notice sometimes they increase their speed. I always wave and say thank you as I pass. Today a guy swerved left a little so I honked once quickly. I put on my right blinker to merge back. He honked his horn because I was passing him. I noticed he had a drink (alcoholic?) in his hand. I don't know if it was alcoholic but per chance?