Capeta

Capeta (カペタ) is a Japanese sports manga and anime about kart racing by Masahito Soda. The manga was serialized by Monthly Shōnen Magazine from March 2003 to March 2013, which won the Kodansha Manga Award for shōnen in 2005. The anime aired on TV Tokyo from October 4, 2005 to September 26, 2006

Plot
Taira Kappeita, or Capeta, was a 4th grader boy who lost his mother when he had been very little. Although he pretended to be tough in front of his father, actually he felt lonely. One day, his father brought junk parts home from his workplace and made a racing cart. They went to a circuit to test-drive the cart, but Capeta discovered that its frame was bent and it could hardly run straight. But Capeta manages to handicap the only flaw, with his technique, and managed to follow soon after the fast cart and he could nearly leave it behind. The driver in the fast cart was Minamoto Naomi, the champion of the East Japan Junior Cart. Looking at their chase, Naomi's mother, Minamoto Nanako, advised Capeta to take part in the official race.