Toyota's chairman apologized for cheating on certification and safety tests for seven car models and promised to correct any wrongdoings. His remarks coincided with a Japanese government investigation initiated earlier in the year, encompassing several car manufacturers. The scandal may not affect Toyota's non-Japanese market, but could pose a challenge in their home market. Toyota has temporarily stopped shipments and sales of three models produced in Japan. Other Japanese car companies have also admitted to improper vehicle testing and have halted production, but reassured customers of their safety.