Just a reminder that bungee cords are not a safe way to secure anything heavy inside your vehicle.
Even though it may seem secure, during an accident, the bungee cord will stretch and whatever it was attaching will not be secure. In an accident, your 10 pound TV can be moving forward with a force of 400 pounds (10 pound weight of the TV times 40 miles per hour that the car was going). You won't find bungee cords that can hold 400 pounds. If you are going faster, the force will be even greater.
You need something that won't stretch. They sell tiedown straps in places like Target's automotive department that are made to secure things so they won't move in an accident.
Also some of the items that you can buy have a tiny print disclaimer that says "Not for use in moving vehicles". Last time I was in Target, I looked at those easel type stands that hold your TV with velcro; it does have the disclaimer, so it's meant only to hold your TV at a good viewing angle, not keep it from flying around in an accident.