Are there any special vehicle rewards in gta v story mode?

The verified evidence from Wikipedia focuses exclusively on Grand Theft Auto Online, the multiplayer component of GTA V. It describes the game's release history, open-world environment in San Andreas and Los Santos, and player customization features. However, the evidence contains no information about vehicle rewards, gameplay mechanics, or content specific to GTA V's single-player story mode. Since the question pertains to story mode rewards, which are not covered in the provided source, there is no basis to confirm or deny their existence based on this evidence.