Seems to have been a Harley Davidson rear ended at 1am on a highway. NHTSA also opened an investigation into that crash in 2022 https://ca.finance.yahoo.com/news/1-u-probes-tesla-crash-205...

Tesla recently settled a lawsuit (where the Tesla driver died) recently from an old 2018 incident, so maybe the family saw an opportunity to try their own suit 2yrs after the incident https://www.cbc.ca/news/business/tesla-autopilot-death-settl...