Driving to work this morning, yes driving because I have to go to a customer today wearing a suit, I took the Gladesville bridge to cross the Parramatta river as I do every day. This idiot on a sportsbike decided he was in a hurry and started splitting lanes behind me, WHILE WE WERE DOING 70 KM/HOUR!!!! By the time he got to me halfway up the bridge I was in the middle lane with a car on my left and a car on my right and he wanted to split in between me and the car on my right!! Now, the Gladesville bridge doesn't have the widest lanes, splitting bikes when I'm stationairy already touch the mirrors of my 4WD and this guy wanted to try the same at 70 km/hour. He couldn't because there simply was no room. When he did, 5 seconds later when the car to my right was finished overtaking me, he becomes angry at me because he thought I didn't give him enough space to split. HELLO IDIOT, HOW MUCH ROOM DO YOU THINK THERE IS IF YOU DRIVE A 4WD WITH A CAR ON EITHER SIDE. So if you're reading this, thank you for giving me and everyone on the bridge the SH#TS this morning and I hope you were late after all. Couldn't see what bike it was, a sportsbike of some kind. The only thing I saw was when he passed me that he had a helmet with a reflective visor so I couldn't see his face. No L- or P-plate though.