LOS ANGELES (Reuters) - Electric car maker Tesla Motors has sued a well-known automotive designer it hired to style the body and interior of its electric-hybrid four-door sedan, after the man announced plans for a competing vehicle. The lawsuit, filed on Monday afternoon in San Mateo Superior Court in California, accuses designer Henrik Fisker and Bernhard Koehler, the chief operating officer of Fisker's design company Fisker Coachbuild, of fraud, misappropriation of trade secrets, and breach of contract during their year-long effort in 2007 to style the interior and body of the Tesla sedan, called WhiteStar.