Platinum and Iridium plugs perform at a lower level than copper spark plugs, because they are less conductive and they tend to overheat. However, the overall longevity of these two types of metal is better than copper plugs. In reality, copper has the best performance of all three and the worst longevity.
If a local restaurant, for example, used a celebrity's name or image in a commercial and implied an official endorsement, it could face an invasion of privacy lawsuit. This type of legal action is often taken against advertisers who morph the faces of celebrities onto other bodies to imply endorsement of a product.
1 Invasion of Privacy, Annotation 19 â First Amendment, U.S. Constitution, from FindLaw online legal information.  2 Invasion of Privacy and the Media: The Right 'To Be Let Alone' , by John A. Bussian and Paul J. Levine, in the Reporters Handbook from The Florida Bar, updated August 2004.