I have to agree with the consensus that Ayumi looked really, really pretty in this PV (the dark hair is working for her here). She had a certain Paris Hilton thing going on here (pink strapless dress, fur coat, screams heiress).
But I also have to agree that it was just a random PV. It just seems like something you do when you want to go super mainstream -- make it simple, fun, glam. However, I'm not going to jump on the bandwagon and be all, "OMGZ, American directors suck" because I'm so sick of the random America bashing.

Also, just as a general observation, it's VERY common for things to be filmed in New York on a regular basis so the only people taking video/photos of a hubbub would be one of the following: tourist, film student (hence the handy cameras), or fan. Also, the truck thing isn't uncommon; U2 did something on a flatbed truck in the past year or two. If you work or live in NYC, you've probably run into a filming somewhere.