Suction Camera Mount. Safe?

[mustangless]

I am looking at a Panavise 809 for my car. Does anyone use this? I don't want it to come off when taking off really fast.
[ame=http://www.amazon.com/Panavise-809-Camera-Window-Mount/dp/B000246ST6]Amazon.com: Panavise 809 CCTV Camera Window Mount: Camera & Photo[/ame]

 

[silverstang23]

just make your own rig

 

[03 DSG Snake]

I wouldn't trust a single cup, especially with anything bigger than a webcam.