Leave it to the skateboarders to scout out the best photo locations in Los Angeles. Known as "Skip's Ditch" this is a secret spot, where a public access ramp leads down to the concrete bed of the LA river. Looks just like the famous truck race in Terminator, doesn't it?
This HDRI is a true classic, providing a blank concrete canvas and large flat areas to place things. And the leading lines of the river deliver plenty composition opportunities. Great for checking models, and how they look in a filmic setting.