[3] Shima also participated in the design and fabrication of a standard heavy duty truck which was mass-produced by Isuzu when World War II broke out.

JGR used the opportunity to obtain permission from SCAP to modify all wooden passenger cars (approximately 3,000 were in use then) to a steel construction within a few years.

[3] It was during these years that he came up with an innovation that would later be employed in the bullet trains—the use of trains driven by electric motors in the individual rail cars, rather than by an engine at the front ("distributed-power multiple-unit control systems").

[1] He worked briefly for Sumitomo Metal Industries, but was asked by Shinji Sogō, the president of JNR, to come back and oversee the building of the first Shinkansen line, in 1955.

[1] Hideo Shima was honored by the Government of Japan when the Emperor presented him with the Order of Cultural Merit.