Spawn the Infernus, then use the "Lower Wanted Level" cheat (267-555-0150). This allows you to test the car’s top speed on the Algonquin Bridge without police interference.
Press the button again to bring up the blank phone screen where you can manually dial numbers. Enter the code: Type 227-555-0147 . gta iv infernus cheat code
Progress through the main story until the mission "Buoys Ahoy." At the conclusion of this storyline, Bernie Crane gifts Niko a bright orange Infernus as a token of appreciation. Drive it straight to a safehouse parking space to save it permanently. Spawn the Infernus, then use the "Lower Wanted