I think if it gets as far as court, as said, it's likely to make no difference at best, as it probably wouldn't be admissible as evidence. Of course, if the law did decide to have a poke around on your memory card, they might well find something incriminating that would be admissible as evidence!
It might help your negotiation with insurers where a 3rd party is at fault, perhaps?
If we're honest about it, most people who are prepared to take the hit in fuel consumption that a 200+ BHP car involves are probably going to be driving round generating incriminating evidence against themselves at least some of the time, so should think hard before getting one of these, IMHO.