I found this post and video on The Jalopy Journal, which features articles about vintage hot rods and associated culture. It is color footage of a drive around Hollywood in 1948. Aside from the great shots of the old cars, we pass several theaters and movie studios, as well as the famous Hollywood Hotel. My personal favorite, however, is the straight-outta-classic-cartoon stop light at 1:12, complete with the mechanical "stop" and "go" banners. Enjoy.