responsibility...
I'm going to mention to him about the insurance denying the claim and see if he steps up and offers anything then...
No need to even explain your current disposition/situation. Why even rationalize or trivialize the matter at hand?
Car was under his responsibility. Car got stolen. His mess to deal w/, not yours.
Analogously, it would be as-if a stranger w/ proper liability/comprehensive/collision vehicle-insurance & a valid driver's license hits your car. Would you attempt to file a claim w/ your own insurance company for damages. No way.
Don't even bring your own insurance company & your individual policy into the convo', as it was (or lackoff) at the time. What are you looking for from him, sympathy/pathos/sincerity? Forget all those, this isn't the
Brady Bunch or
Leave it to Beaver. Instead, seek rightful responsibility & ownership of the situation, from him.
This is how it
BETTER go down...
92NSX: "lookie, my GS-R was @ your establishment when it was stolen. We need to settle this now, as it was my primary mode of transportation." [don't ask - simply state, articulately/directly]
Business owner: "well gosh, you know, see here, these things sho' do happen. You did have insurance."
92NSX: "my insurance has nothing to do w/ this. Find me another near-identical car ASAP or make things right, so I can get another one on my own. Time is of the essence, I'm w/o a car." [act like this is your right, w/o being overly-demanding]
Business owner: well, hmmm, I think I can do something.
92NSX: Good. Then do it, now.
Anything less than that, well then you become an adult about it (I don't mean violent, I mean cerebral/statutory/etc').
It's a matter of put-up or shut-up, the way I see it. Of-course, in a mature/civil/cordial manner. But, assertiveness/demeanor/initiative matter.
Just because the business owner presumably wasn't directly linked nor responsible w/ the theft, doesn't mean he isn't accountable/liable of the outcome/fallout. Ask Hulk Hogan (Terry Bolea) about that. . .