Chalk-Head

The Chalk-Head is Sonic "Boom Boom" Renaldi's T-180. This car is featured at the Grand Prix race from the Speed Racer film, where it tries to stop Speed right at the start, but ends up crashing with another car instead.

The Chalk-Head is playable in Speed Racer The Videogame.

Trivia

 * Chalk-Head's body design is similar to two other known cars featured in the Grand Prix race, the Zoomishi and the Janus.
 * Chalk-Head and Thistle are both numbered "33".