"I won't let you fall, all right?" Sirius tried to reassure Remus once more, figuring that it was probably a futile effort, but really, when had he ever done anything that had any lasting damage -- for Remus all right? Sure, he'd scarred James up a time or two, but it gave the man character.
Sirius pushed the bike forward so that they gained speed, but kept things at what he considered a slow pace as they started off into the night sky, rising higher. He kept them so that they still were around the highest floors of the skyscrapers, nimbly threading the bike throughout the buildings.