Great! Repeated studies have shown that most drivers (of anything, bikes included) tend to steer closer to things they are closely scrutinizing, which is exactly what motorists are going to be doing if they're trying to figure out if they are 2 1/2 or 3 feet away from you. One of the first things taught in most competition driving schools is to look through turns, not at the apex, guess why. I sometimes wonder who is ultimately responsible for laws like this. So now if a motorist hits a cyclist, is that prima facie evidence that they were closer than three feet and were therefore breaking the law, thereby rendering their auto insurance contract null and void and ultimately making it harder for an injured/dead cyclist or their estate to recover compensation? I'd rather it be me creating/controlling the separation distance wherever possible, gotta love those sidewalks even more now, and Big Apples to smooth out the joints!