I find this behavior to be particularly reprehensible... and darn hard to predict...

You are left positioned, signaling and moving... and along comes some idiot that passes you on the left with a quick swooping movement...

Had a guy do it yesterday to go into a shopping mall... on Convoy. I had just signaled and was about to turn when this kid flys by me and swoops left into the driveway just before the one I was going to. (this area is fill with strip mall shops and driveways).

This is hard to predict as one tends to be looking forward to see when traffic clears... so you are not gazing behind at a mirror. I was a nano second from leaning into the turn when the driver came by right where I was going. I wanted to "share my thoughts on this" but held my tongue with the driver and went on to the shop I was going to.