How many accidents have there been in community service road vehicles? You tell me! That’s part of the chronic problem of aviation ‘standards’ setting.
No idea either but you thought it was relevant. CASA used to run a day long seminar on the topic of VFR into IMC. It was well received and copied as a format in Canada. I remember going to one where the solution proffered by the assembled pilots was that if the VFR pilot only had an instrument rating then the accident would not have happened. The problem with that thinking is that having an Instrument Rating just makes your decisions different not better. So if an individual's decision making process is flawed then having an instrument rating will merely delay the inevitable.
YPJT by your post you sound like someone who is always looking at ways to improve your craft. I hope AF is able to facilitate that process.