[Captain Ahab Jr]

Curt, the goal with testing is not to break the car but to put enough mileage on it to give enough confidence it won't break

All the breaking of parts will have been done beforehand back on the factory on various test rigs eg engine dyno, multi-axis suspension rigs, power train dyno, brake dyno, full chassis rigs etc etc

A 36hr test is 1.5x a 24hr race, many of the safety/reliability critical parts on the car will have been designed and stressed to 1.5x the track loads or race mileage

The whole car will be stripped down back at the factory with all the safety these parts fully inspected eg crack tested, X-ray, CT scan, ultra-sonically to check for damage or the start of damage

I'd imagine Porsche will be quietly pleased with how the test went