- NASCAR Hall of Famer Fred Lorenzen was posthumously diagnosed with Stage 3 CTE after decades of dementia — the first known NASCAR driver whose brain was examined.
- The Lorenzen family has pledged $1 million to help diagnose CTE earlier and has urged NASCAR to join the effort, but the sport has not yet committed funds.
- NASCAR has stepped up concussion protocols and some drivers (like Dale Earnhardt Jr.) have pledged their brains to research, yet experts say more funding and participation are needed.