Complex sentence: His two seasons in International Formula 3000 were not successful however, and though he won the French Formula Three Championship in 1992 he switched to tin-tops the next year, never racing a single seater again.
Split into simpler sentences: His two seasons in International Formula 3000 were not successful however, and though he won the French Formula Three Championship. In 1992 he switched to tin-tops the next year, never racing a single seater again.