"Compatible for all vehicles with Navigation, Bluetooth, TV, Etc" - Thats all nonsense !!
From my understanding, the Stubby/Whippy is only the AM aerial anyway.
The FM Aerial is built into the rear windscreen
The TV Aerial is on the rear left quarter, under the rear lights and behind the bumper
The SatNav aerial is tucked up above the rear view mirror, behind the Courtesy light
The Bluetooth aerial is behind the dash, nearest the driver. Why would you put it outside the car ?
So unless you listen to AM Stations you may as well put a Unicorn horn on the rear wing for all the difference it will make !