Complex sentence: The DB4's design formed the basis for later Aston Martin classics, such as the DB4 GT Zagato, the Lagonda Rapide 4-door saloon, it was eventually replaced by the Aston Martin DB5.
Split into simpler sentences: The DB4's design formed the basis for later Aston Martin classics, such as the DB4 GT Zagato, the Lagonda Rapide 4-door saloon. It was eventually replaced by the Aston Martin DB5.