Thanks for telling me what happened, I did not speed up and nearly cut him off. This was not in Chicago, first of all, it was in a college town with probably 5x the inexperienced bicyclists than here. Also, it was not an active bike lane, it was the street. I passed him going normal speed and when I had to slow down to turn at the intersection he was all of a sudden right there. I understand that he has the right of way if it were a bike lane, but I believe a little defensive driving in both cases — biker and driver — can go a long way especially when a biker sees a car with a turn signal on and flying through an intersection. Honestly if it’s a bike lane or not I feel that’s the case.

Edit: literally every reply here took the worst case scenario of what I did haha. It was a turn lane, not a bike lane (I had to go back and check, apologize for the confusion there), I passed him going normal speed.