Bad thing is if the accident was the Town cars fault he could be bankrupted. Hand built test car totaled, love to see the insurance agents face when he gets the claim for this. J I doubt GM would do that, public backlash would cost more.
Michigan is a no-fault state. GM's insurance will pay the damage and the Town Car driver won't pay a cent (aside from potential increased premiums as a result of a new accident on his record) unless there were substantial injuries to the occupants of the Corvette. This is true even if the driver of the Town Car were 100% at-fault.
Even assuming a situation in which there were no insurance, no court is likely to set compensation for destruction of a test mule at the retail value of the vehicle. Nor is it likely to set the compensation at the cost of production of the vehicle. In a situation like this, a court would likely award the cost for GM to replicate the vehicle
with present production techniques.
In other words, the award to GM would likely be the cost to produce a production C7 plus the cost to modify the vehicle to test whatever was being tested. It's not likely to be an astronomical number and, despite what the retail value might be, it's not likely to exceed the retail value of a production C7.
Of course, as I've said, Michigan's no-fault insurance system means that GM's insurance pays for all repairs to the Corvette and the Town Car driver's insurance pays for repairs to the Town Car, isolating the Town Car Driver from having to pay for anything related to the Corvette.
ZV