There's a clear public interest in preventing standing vehicles from blocking midtown traffic. My friends have dealt with this by sheer numbers: when one friend

There's a clear public interest in preventing standing vehicles from blocking midtown traffic. My friends have dealt with this by sheer numbers: when one friend is moving, a dozen show up to do the quick transfer from sidewalk to truck. It's still against the rules, but fast enough that you would be unlikely to be ticketed.