Here's the situation: This morning waiting on a red at an intersection, I'm at the front in the left lane of two lanes going straight, there's a car at the front in the right lane, and a scooter coming up in front of the car by using the right-turn lane. As we're waiting, the car starts edging forward and pulling slightly left to be level with the scooter, so the scooter edges forward itself, and so on, as they do the "I want to take off first at the lights" dance. Finally the light goes green and we all take off, with the scooter in front of the car and the car basically right up the scooter's arse. I'm about level with the tail end of the car, and see the scooter has an L plate on the back. So I go in, horn a-blaring, and when the driver looks over to see who's beeping and why, I dive into their lane and get between the car and the scooter, slowing down just enough to get some space between them both and allowing the scooter to get safely ahead. The driver then pulls into the left lane and starts gesturing angrily at me from his window, so I just point to the L-plate on the scooter, hoping he gets the point. The scooter filters to the front of traffic stopped at the next light, seemingly oblivious to the drama happening behind it. Now, I don't agree with the scooter's action in adding to the aggravation of the driver. I haven't been riding for so very long but I've learnt that if you're going to filter to the front, either get directly in front of the car you're going to try and take off in front of when the light goes green, or be prepared to give way to the egoist who is hell bent on not letting you be in front when the light changes, nevermind that you'll be faster. I honestly think the scooter should have just let it go, and let that driver take off first and then slipped behind him, but that doesn't mean that the scooter deserved being so severely tailgated. Now I'm wondering if I did the right thing in getting involved at all. Have I really protected an L-plater, like my ego thinks, or is all I've done convince another driver that riders suck, and given an L-plater a God complex in relation to dealing with any other vehicles?