This is tough, I instinctively recoil from him due to his attitude but being a Nobber, apart from on CC, is no grounds for prosecution. I mentioned earlier in the thread he was 18, that wasn't to excuse him as a child but to highlight the level of ignorance and arrogance we all had at that sort of age...or at least I know I did. I know a lot has been made of his lack of remorse/empathy but that smacks of 'expectations' to me. Were he a model student, who was smart enough to blub and look distraught everything might have been different, though maybe the rampant cyclist hating media would still have had their field day.
Despite his failings intent matters to me and I actually believe he didn't know his bike wasn't street legal and that he believed in his 'skills' to an unreasonable level.