What's interesting is that insurance companies seem to measure bad driving using a few different metrics including deaths per miles traveled [5]. Single vehicle crashes were also very dangerous in the rural states like Wyoming (deer are a serious problem), but for some reason Rhode Island tied with Montana at 70% of all accidents being single vehicle accidents[6].
I also couldn't find an annual figure for people disabled in car accidents, but a 2004 study found that about 1.2 million Americans live with permanent injuries from car accidents and about 41% of them are unable to work [6].
[0] https://www.nhtsa.gov/risky-driving/drunk-driving [1] https://www.nhtsa.gov/risky-driving [2] https://www.nhtsa.gov/risky-driving/drug-impaired-driving [3] https://www.nhtsa.gov/risky-driving/distracted-driving [4] https://worldpopulationreview.com/state-rankings/worst-drive... [5] https://www.iihs.org/topics/fatality-statistics/detail/state... [6] https://pubmed.ncbi.nlm.nih.gov/15474547/