For this photo, in the early evening I pulled over on the very quiet Highway 69 between Mariposa and Oakhurst. I mounted the camera on a tripod, and waited for some cars to appear at the edge of the image.
I then exposed the image for 30 seconds, (f8, ISO 200) so the lights from the cars would streak across the image.
Photo © Alex Schoenfeldt 2005. All rights reserved.
Alex Schoenfeldt is an official Yosemite National Park wedding photographer.