I think that the car that hit the wall at HD wasn't through aquaplaning. The driver arrived late. Missed driver's briefing. Didn't check the tyre pressures. Having spoken to the driver afterwards, believed that one tyre was way low and came a cropper on lap one. However, the following car's in car video showed it doing a hard right alongside the pit entrance and there was a suspicion that maybe a wrong gear grabbed but I haven't heard the final result as I had to leave just as they were going through the video again. It certainly wasn't a circuit problem, though it did take 45 mins to effect repairs to the barrier and remove the car.