the Porsche Classics at the Castle event held at Castle Hedingham in Essex, England had one slight mishap... a driver wasn't aware that the area ahead of him dropped off, and staffers weren't making sure he knew the hazardcape.

https://www.roadandtrack.com/news/a62225744/porsche-911-driver-goes-off-ledge-in-his-997-at-car-show/

https://www.facebook.com/photo?fbid=10161535141780821&set=pcb.10161535141955821