Chalk-Head

The Chalk-Head is Sonic "Boom Boom" Renaldi's T-180. It is featured at the Grand Prix race from the Speed Racer film.

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

Background
The car tries to stop Speed right at the start, but ends up crashing with another car instead. It survives along with the Infernal Oil T-180, but are way in the back for the rest of the race.

Trivia

 * The car's color scheme is coated in math and science equations, thus why it’s named Chalk-Head.
 * Chalk-Head and Thistle are both numbered "33".
 * In the files from the Videogame, this vehicle is referred to as "Hyperion".
 * Chalk-Head has the same body shape as:
 * The Janus Automakers T-180.
 * Zoomishi.
 * Uniron, which Rex Racer had raced for before his death in the Casa Cristo 5000, was one of the Chalk-Head's sponsors.