A truck as big and flashy as the Hummer EV is definitely a target, so extra security is a smart move. For a dashcam, I’d go with BlackVue DR900X, it’s 4K, has cloud storage, and can monitor your car when parked. If you want a voice deterrent, something like the Viper SmartStart alarm lets you control and monitor security remotely. As for impact sensors, the Compustar CS7900 has shock sensors and an adjustable siren that can alert you before someone even touches the truck. Just be careful with sensitivity settings, or you’ll get notifications every time a leaf falls on it.