Let me tell you, this NEEWER suction mount is the unsung hero of my car filming setup. That first *thunk* sound when the vacuum seal engages? Pure satisfaction. I've used it to mount everything from my chunky DSLR to a GoPro Hero 12 on highway drives, and it hasn't flinched once - even when I hit unexpected potholes at 60mph.
The magic arm is where this really shines. Shooting a time-lapse of sunset through my windshield last week, I could smoothly adjust from dashboard-level to overhead shots without breaking the suction. The ball head stays put exactly where you lock it - no gradual drooping like cheaper mounts I've tried.
Pro tip: Keep an alcohol wipe in your kit. The one time I had adhesion issues was filming on a rental car with residual dashboard cleaner. Quick wipe-down solved it immediately. And yes, it does leave slight marks on some surfaces - small price for industrial-strength hold.
Where it struggles? Textured surfaces (learned that trying to mount on my friend's matte-finished RV). But on glass or smooth metal? This thing could probably hold my entire camera bag if the specs allowed it. The included rubber handles make removal satisfyingly easy too - just lift the tab and hear that pressure release hiss.
For roadtrippers, automotive YouTubers, or anyone who films while moving - this is absolutely worth the investment over plastic alternatives. That metallic *ping* when you tap it? That's the sound of gear that won't fail you mid-shot.