1938 Datsun 17 Sedan: In 1938 Japan was already at war in China. The rugged and very economical Datsun was hugely popular. The exterior was not much different to that of the "16", but a thick vertical bar in middle of the front grille distinguished it. As cotton and wool were scarce, the cabin interior had a very simple finish. The 722cc engine was a side valve (SV) design.