I was on my home from work tonight, when I was stopped at a light. This particular intersection has (from left to right) a forced left-turn lane, a lane with the option to turn left or go straight, a lane that goes straight only, and a forced right-turn lane.
I was in the straight only lane, with one car in front of me, several behind me, and the lane to my left had a line of cars stopped. All of the sudden, someone on a motorcycle comes racing towards the intersection between the lane I'm in and the lane to my left, and proceeds to pull in front of the car ahead of me. That's bad enough, then I see them turn into a parking lot, cut through it, and turn out onto the cross street--basically the same trick they could've done if they had been willing to wait in the left-turn lane.