for the above two, http://www.rpmart.com/newsculpt.html but look around through all his stuff, it's terrific. Richard Pietruska is a teacher at the Art Center of Design, Pasadena... you've heard about that college, it's the one Chip Foose and Dick Teague went to.
I found him and others from looking at http://www.autoartgallery.com/afas/index.html
One artist, Bill Motta, was the art director of Road and Track magazine. He is the V.P. of the Automobile Fine Arts Society and a member of the National Acrylic Painters' Association. http://todaysinspiration.blogspot.com/2006/02/bill-motta.html
