1939: the first true General Motors concept car, the Buick Y-Job is debuted.
In 1939 the industry's first rear turn signals to use flasher are introduced by Buick.
The 1939 Buicks undergo a facelift, this time looking like an Olds, of about '40 vintage.
ROMANO-ARCHIVES Special Collections Department - US Cars Multimedia 1939-45
…not likely a Buick…my Uncle owned a Pontiac, my father a Plymouth – I would say it was about a 1935-39 Plymouth that hit the little boy, not likely a 1939 vehicle.