If I dislike the fact people are in the picture I would wait until it isn’t so busy and take pictures without them. If I’m impatient and unwilling to wait until it isn’t busy, I would use a retouching program or photoshop to remove things I dislike. In this case, it could be cars, people, etc. If I’m unavailable to either choices, I will move my photography spot to any other location where it isn’t so busy for the perfect picture.