Similar, but I was looking for something with either one or two big suction cups. I saw them in some older chase videos a long time ago. They had black suction cups and the camera sat in a "U" shaped cradle between them.
it actually is pretty stable. it even held great through a wreck!..its not only not ever come down but not even nearly! but its all dependant on cam size i guess. i am using a sony handycam mini/dv and a older panasonic mini/dv.. they are both not small by todays newer models. i cant remember if i bought it extra but i also got a clamp mount too and it clamps to the window and works awesome. the only frustrating thing is just getting it set up looking the right direction but if you use it frequently it gets much easier.