FWIW:
The ashtray in my 1995 Lumina, is a perfect place to conceal a small pistol..
I lined the ashtray (I don't smoke anyway) with the smooth velcro, and my LWS32 just "slides right in" and you close the ashtray, and it's totally hidden.
Easily accessible, totally hidden..
I've never been a fan of trying to hide a firearm between the seats, or in the glove compartment and such, but over the decades I have found that you can hide a reasonably small firearm in a holster with a "snap strap" UNDER the front edge of the drivers seat quite well by simply mounting the holster upside down to the seat frame gun handle facing out.
Depending on the model of the car and the specific seat, you can do the mounting by lying upside down in the floor using the plastic ties found at WalMart/Lowes/etc.
With the holster mounted to the top (of the seat bottom) the firearm is NOT easily visible to the naked eye unless you know it is there. A person just "reaching" or "swiping", or even quickly visually scanning under the seat looking for valuables would never find it.
My favorite choices for underseat "hiding" are my Colt Cobras. There is a small chance that over time dust and such might gather on the hidden firearm, so a revolver is, imo, the best choice. I take the Cobra out periodically and clean it, and make sure it's working ok, then put it back.
I should think any quality small revolver, (D frame Colt/J frame Smith) would be good choices, and over time I've had good luck with the old original Charter Arms Undercovers. The Undercovers are cheaper than the others, but still, in my experience, very reliable..
I think a holster with a strap and snap retains the concealed firearm choice better than just a snug fit custom holster.
If you have a Seecamp or other small pistol, you can use a similar holster and that will work too. (See photo below).
Just a suggestion as how to hide your firearm in your vehicle, but this method as worked for me for decades.
Best Wishes,
Jesse & Buddy ~ twd.