In New Jersey, one's home is not one's castle after all. The real castle, it turns out, is the car. The New Jersey Supreme Court ruled 4-3 yesterday that police do not need a reason to ask permission to search someone's home. The same court four years ago issued rules saying police must have a good reason before asking motorists if they can search their cars. Yesterday the court said the rules for cars -- which prohibit police from asking motorists if they can conduct a search unless they have "a reasonable and articulable suspicion" of criminal activity -- are...