Nokia Lumia 900 and phone holders

I'e been having a hardest time finding a car phone holder that doesn't press the side buttons on the Nokia Lumia 900. While I'm driving, the camera button is activated and you see camera flashes like crazy! Then sometimes it activates the power down button and it shows you the "pull down to shut off" screen.

Does anyone here use a car phone holder that doesn't cause these problems?

Tks