I have a few comments:
Plasma is not well informed about insurance (at least in the UK). If you have ordinary road insurance, the insurers are not allowed to decine their responsibility because the driver was going too fast, was drunk, was racing, was on the phone, etc etc. That applies only to the bit of road traffic insurance that is compulsory.
Jason B is not up to date on the requirements and costs for entering any speed event in a motorcar. All such events require special boots, gloves, helmet, fireproof suit, etc. And most of this stuff has to fit properly and goes out of date fairly quickly. Say £500 just to turn up, never mind getting the car to comply etc. The MSA has the sport firmly in its control, and the insurers know that any non-MSA bunch is not going to play by the recognised rules, so they will not offer insurance for the organisers, land-owners, etc.
The 'event' took place on a car park, which is different from the highway. Not for insurance, it isn't, though – a car park is regarded as a public place so road insurance is needed (along with lots of other boring stuff).
And every employed person has a contract of employment, but some jobs don't have them in writing.
I'm not against anyone having a rant at such activities, just trying to make sure they are not making claims that might lead to others saying 'We can ignore them as they obviously don't know what they are talking about).
So please don't rant at me …
Cheers, Tim