Desc: Ankokugai no dankon: Directed by Kihachi Okamoto. With Yûzô Kayama, Makoto Satô, Tatsuya Mihashi, Kumi Mizuno. While testing the advance prototype of a revolutionary gas engine, the vehicle is involved in a mysterious accident killing its driver. The police report states that it was an accident, caused by the driver. But driver's younger brother senses foul play.