I was thinking the same thing. I'm 6' 157 lbs and I can barely fit behind the wheel of my '55 post with it all the way back.
A Douglas SBD Dauntless of Marine squadron VMB-2 crashed into a house at Rockwell Field, California. Early-1941.
Even better, it was the assembly line that Chevrolet built for part of the GM exhibit area at the 1933-‘34 Chicago Century Of Progress.
Maybe ‘55 Chevies didn’t have much legroom? I’m 6’2 185 lbs and fit fine behind the wheel of a ‘57 sedan.