Seppuku

The Seppuku is Kakkoi Teppodama's T-180. The car is part of the Musha Motors team which is a major company in the Speed Racer film. It is featured in the Grand Prix race near the end of the movie.

The Seppuku is playable in the PS2 version of Speed Racer The Videogame.

Trivia

 * "Seppuku" (often referred to as "harakiri") is a Japanese suicide ritual that is performed in order to restore lost honor.
 * The car is samurai-themed.
 * As this car is part of the Musha Motors team, it is likely that it uses an inter-positive transponder as its engine, similarly to Royalton Industries' GRX.