Complex sentence: The Pontiac Bonneville Special is a purpose-built concept car unveiled at the General Motors Motorama in 1954, the first 2-seater sports car Pontiac had ever produced.
Split into simpler sentences: The Pontiac Bonneville Special is a purpose-built concept car unveiled at the General Motors Motorama in 1954. It the first 2-seater sports car Pontiac had ever produced.