I thin I may have had one, also with supplemental straps, back in the 80's, but that would be irrelevant to to days technology, I'm sure. I think the suction cups more kept scratches from happening than actually held anything down, and U/v damage occurred as well. I soon went to a trunk mount, when I bought my used Ford Granada (1977) in the late '80s. It had straps, with arms to hold the bikes. I still have it. It is a Trek Mass Transit. I think I carried 4 bikes on it at one time when I was buying, refurbishing, and selling bicycles