Easy solution- get a Customized Holster that hangs outside of the vehicle on the top edge of the window with retention device. Pistol is in plain sight (open carry) and outside of the Passenger compartment.
If Ya need to use Your Firearm it’s right there.
Antitheft device is an Electrical Discharge triggered when someone besides You grabs the Pistol.
My .380 sits in a holster over my sun visor, Can’t see it from outside.