Good replies, here's my two øre: I "ride like a car" if at all possible, but it does depend on the speed of the other traffic. If I'm *significantly* slower, I would try to stay out of the way and maybe use a pedestrian crossing. If I'm just a bit slower I'll take the lane, make huge obvious hand signals, and make an effort to accelerate fast out of a stop.

I'll pass a line of cars standing still if I can see there's room for me at the front or side, but I always stop where I'm most visible to the closest car, usually just in front and to the right of them. I never pass cars on the right if they're moving or I suspect they'll start moving while I'm passing. In other words I only go to the front of a line at intersections I know well, and then I'll usually sneak ahead as far as I can ahead of the line, so that I will be the first "vehicle" across the intersection. This is the only traffic rule I tend to bend. Passing someone in an intersection isn't allowed here, so I do my best to be all the way past the intersection and over to the side before someone needs to pass me.