Found it. Google "Toyota vs Meshwerks". From one hit, the Intellectual Property Law Blog (Link):
"In Meshworks, Inc. v. Toyota Motor Sales U.S.A., the Court found uncopyrightable and, hence, not protected against an alleged copyright infringement, the "unadorned, digital wire-frames of Toyota's vehicles" which had been commissioned by the car manufacturer's ad agency, Saatchi & Saatchi, which was also a defendant. The motivating factor for the suit was, of course, Meshworks' failure to receive payment for anything more than the first use of the digital wire-frames so that such additional, unbargained for uses would have constituted infringement. In this case, the Court acknowledged the presumption of validity flowing from the copyright registration awarded by the Copyright Office to Meshworks but proceeded to conduct its own de novo review on copyrightability. Under the Supreme Court's decision in the Feist case (Feist Publications, Inc. v. Rural Tel. Serv. Co., 499 U.S. 340 (1991)), a work must be original to qualify for copyright protection. By original, the work must be both 1) independently created by the author and 2) possess at least a minimal degree of creativity. Mere technical skill, no matter how great, is sufficient to justify virtually exact replication of a preexisting form.
Meshworks had clearly contributed substantially to the wire frames, which resulted from a two-step process of digitizing (collecting physical data points from the portrayed object) and modeling (generating an image from these data points). About 90 percent of the data points contained in each final Toyota model were the results of the skill and efforts of manually sculpting at the second, modeling step, which took nearly 80 to 100 hours for each modeled vehicle. Nevertheless, the Court found that Meshworks contributed nothing incrementally original to the preexisting Toyota designs or, in the words of the Court, "But the models, reflect, that is, 'express,' no more than the depiction of the vehicles as vehicles." (Emphasis in original.)"
Here's a link the court papers (in PDF format), but it doesn't always open so you may need to google it - http://www.ca10.uscourts.gov/opinions/06/06-4222.pdf