I've only been on two juries so I can't speak with any great authority. The jurors I were with managed to set aside their personal feelings and judged the cases on the facts that were presented to them with guidance from the judge. For obvious reasons, I have no idea what goes on in other jury rooms.
I have done jury service too and on one of mine there was one guy absolutely blatantly failing to act outside his personal feelings, to the point he was saying he got the evidence and felt the defendant was guilty but didn't want their incarceration on his conscience. It ended up an 11:1 majority verdict. This was a harming children issue too, not driving that is societally seen as a basic civil right and an expectation, rather than a licenced privilege.
Whether we like it or not, people for generations now have reacted to the news someone is a non driver as if they have 2 heads, it is something a large proportion of the population engage in daily and errors, failings or deliberate and wilful flouting of any prohibition is by and large normalised and forgiven as trivial or 'there but.....' by a disturbingly large number of people.
I admire the restraint and dignity of the bereaved family and their decision to donate his organs. I have made the same provisions and my wishes known to mine, citing if I go under a bus one evening as the reason for being so up front about it, but I'm less restrained in this case
I sincerely hope (hahaha) he is charged with manslaughter not a driving offence for knowingly and wilfully using a killing machine against direct medical advice, but assuming he gets even then hardest slap on the wrist the law allows for committing a motoring offence, I hope his life is in tatters and he wakes up screaming every night in horror at what he has done so he can dedicate the rest of his life as a warning to others of what happens to the perpetrator long after we've all forgotten the victim.
Edit: BTW, the other case I sat as a juror on, equally nasty accusations, was unanimous not guilty, before anyone reads this and assumes hang em shoot em.and flog em is my default)