The law likely wont last through a single law suit. Images have been considered a form of speech for years, and we are guaranteed freedom of speech under the constitution. There are other clauses you could use to invalidate this law too. Due process under the void for vagueness doctrine comes to mind. After all WTF is "offensive" now a days, given that goatse is an internet meme for Christ's sake.
New Car: 2008 335xi Coupe
Earlier Car: 2004 STi (got stolen)
Earlier Earlier Car: 1995 Mustang GT (416 whp and a blown engine)
Really Much Earlier Car: 1988 Mazda 626 TURBO