In "Need for Speed: Porsche Unleashed", the player can only drive cars manufactured by Porsche.

The answer is true because in the game "Need for Speed: Porsche Unleashed," the player is restricted to driving cars that are exclusively manufactured by Porsche. This game focuses specifically on Porsche vehicles, allowing players to experience the thrill of driving different models and variations of these luxurious and high-performance cars. With a strong emphasis on showcasing the brand's heritage and evolution, the game offers a unique and immersive experience dedicated solely to Porsche vehicles, making it a must-play for Porsche enthusiasts.