ive stopped like that too, kind of off to the side. ive always thought "someone could pull right up here" but no one has yet. there have been a few times i was following a friends car on my bike, or them following me, and we would pull up like that so we could talk at the lights. i guess how i felt about it would depend on how they did it. if they just slowly crept up in there, i guess id be cool about it. id definitely be making sure they knew i was there though. but if they came flying up brakes locked all 4 tires smoking, i wouldnt be happy.