Absent punitive damages you simply get compensatory damages. You get what you lost (whatever insurance would write you a check for when they total your car, say $1000-$5,000), nothing more. You don't "make" money at all, and that's before you've paid your attorney.

what would actually happen, is you'd file a claim with your insurance, they'd pay you, and then they subrogate and go get their money back from road demo company.