This is a super genius product design that seems so simple for doggy car rides, you almost have to wonder why no one thought of this any sooner. The Auto-Zip Line is this cool invention that you attach to the handles in the back seat of your car that basically allows your dog to move left to right while keeping him confined to the back seat. I know when I take my dog in the car she is usually all over the place. Front seat, back seat, my seat, and even on the floor. This innovative design keeps a harness around the dog that attaches to the zipline on the roof of the car so any sudden stops or an accident (god forbid), will keep your furry friend totally safe in the back seat.