WHICH WAY HERE?

Approaching an intersection I realized that I needed to switch into the left lane, so I put on my left directional and waited to see if the driver of the car coming up behind me and to the left would be courteous and allow me in. There still are some courteous drivers on the road. I know. I encountered one only about a year and a half ago.

But not this day. The driver continued on steadily until he was beside me, so I slowed down in order to fall in behind him. Just as he got past me and I was about to pull over into the left-hand lane, he suddenly pulled in front of me, desperate to get into the right lane so he could turn right.