Seen it before and they have called and talked to me. I call it a Dolly...they want to claim it is an extension of the frame of the tow vehicle..that I do not see. They claim that an SUV can tow a 5th wheel or Gooseneck trailer. I ABSOLUTLEY do not see that being done safely.
MY OPINION ONLY...but I have towed trailers since I was 17....just don't see this as safe.