Being from Detroit a good deal of my work was automotive related. Most storyboard assignments had tight deadlines and often it was not possible to render the cars in great detail as seen in the examples below. If time allowed, I would normally have added detail such as chrome trim using white paint. These frames were all done 5 x 7" using markers on high quality layout paper.
These frames are from several different automotive storyboards done for a Detroit ad agency whose name escapes me, but they are typical of my fast marker renderings.