Although its stated target of a four-seat car capable of and available for ¥150,000 was unrealistic — despite being twice the national average income at the time, it was still only one fifth of what a typical vehicle cost — it was given credit as the spur for domestic automakers to strive to lower their prices. From this year, exhibited products have been grouped by vehicle type - truck, pickup truck, passenger car, 2-wheeler, and motorcycle. This measure was taken to provide more merits for visitors because the majority of them were particularly interested in passenger cars. A poster of the motor show carried the slogan "Japanese Automobiles at a Glance!" The Japanese government also had planned to release the national car at an affordable price range of around 250,000 yen. At that time, passenger cars were still very expensive for the general public in reality. At the same time, they had a premonition that the "passenger cars" they dreamt of would gradually be getting closer to their lives. Passenger cars became the boom of the motor show, accordingly. 1957 Although only 527,000 people visited the fourth show between May 9 and May 19, 1957, significant vehicles made their debut; the first of the long running Toyota Corona and Prince Skyline were introduced, as well as a prototype of the Datsun Sports. The Fourth All-Japan Motor Show was held at Hibiya Park during an 11-day period from May 9. In the passenger car category, a significant improvement was found in the quality of exhibited vehicles, including the first-generation Toyopet Corona small car, Fuji Seimitsu's Prince Skyline, and the Nissan Datsun Sport prototype. In the truck category, Toyota displayed its first diesel truck (DA60), while Nissan unveiled its Nissan Junior and Nissan 581 models. Ohta also exhibited its 1.5-ton class light truck model. Meanwhile, an automobile information bureau was newly set up in the PR Center to provide extended knowledge on road traffic and vehicle design, etc. In this show, the organizer successfully provided visitors and exhibitors with an opportunity for business talks in addition to the general promotion of automobiles. 1958 It was held from October 10 to October 20, 1958. For the Fifth Motor Show, the venue was changed to the infield space of Korakuen Bicycle Race Stadium due to construction at Hibiya Park. The time period of the show was also shifted to commence from October 10. The