Chou Supercar Gattiger
Japanese title: 超スーパーカー ガッタイガー
Type: TV
Source: Unknown
Episodes: 25
Status: Finished Airing
Aired: Oct 4, 1977 to Mar 28, 1978
Broadcast: Unknown
Duration: 25 min per ep
Rating: G - All Ages
Producers: Wako Productions, Nihon Keizai Koukokusha
Genres: Action, Sci-Fi
Themes: Racing

A scientist invents 5 special solar powered cars that can be joined into one supercar. The cars are given to the scientists son and his friends to compete in the racing circuit, but they are pursued by an evil organization that wants the secret of solar power. 

(Source: AniDB)