I never stop when I'm driving to work. But yesterday was different. I think this is the best rainbow I've ever seen in my life. This was taken at an overlook next to Interstate 280, about 30 miles south of San Francisco. Pretty nice commute route, huh? 280 has been called the most beautiful freeway in the world.
Photo was taken with the Pentax *ist D and the 18-35mm kit lens.