The A1 was the first prototype passenger car built by the company that became Toyota. It was redesigned and put into production as Toyota's first production cars, the AA sedan and the AB cabriolet. These were succeeded by the similar AE, AC and BA sedans.
The series as a whole was replaced by the quite different and much more advanced SA.
Three A1 prototypes were completed in May 1935. None of them survive. They were blessed in a Buddhist ceremony and Kiichiro Toyoda then drove one of them to his father's grave (his father having given him the seed money to start a car factory).
After completion of the prototypes, Toyota then switched its attention to the G1 truck because it was more likely to be profitable in the short term. After the G1 was in production the company was able to spend resources on developing the AA and AB passenger cars.
Pictures are taken in Toyota museum in Nagoya city https://toyota-automobile-museum.jp/en/
