Watch Carnal Highways for Free: How to Stream the Movie Online at 123Movies. . Two friends have decided to take their lusty passions on the road, and to help them on their journey, purchase a big rig truck. They're soon inundated with more beautiful women than they can handle, including Seka, Brook West, and Juliet Anderson, and find themselves going from one sex filled adventure to the next, along the Carnal Highways.