Very clever and perhaps too well-crafted to be 100% believable. You will have to use some self-restraint and not use your carpenter’s square to make this more realistic.
On the same mind-set, I carried thousands of dollars of camera equipment in my car always in a large Igloo cooler. The camera bags went inside the cooler along with the camera equipment. The film benefited from the insulated environment—a side benefit.
I have a cooler large enough to hold two Systainers. I, however, never travel with my Festool saw.
It is a rare thief who will break into a car thinking to steal a ham and cheese sandwich and a can of Coke.
As an aside, my IPad now recognizes “Systainer” and will fill it in if I start typing “Syst…”. I don’t know when that happened, but I just noticed it now. Despite the software (or A.I.) suggesting the word “Systainer”, the spell checker continues to flag the word as a misspelling.