What was the 1st organized stock car race? Was it the 1933 Elgin race? If it was, then this is the 1st winning stock car

Driven to victory in the 1933 Elgin Road Race by former Indianapolis 500 winner Fred Frame, the 1933 race was possibly the first organized stock car race, making this car possibly the first winning stock car

https://www.mecum.com/lots/SC0520-415668/1933-ford-roadster-elgin-road-race-car/