It appears that you may be looking for information on a specific version of the game (47.8). I couldn't find any information on this exact version, but players can try checking the game's official website or online forums for updates.
Three weeks later, a white envelope arrived. No return address. Inside: a plane ticket to São Paulo and a note in Portuguese: "Demonstre. Caminhão real. Pátio 8." (Demonstrate. Real truck. Yard 8.) It appears that you may be looking for
: Infinite in-game currency for purchasing upgrades and tuning without grinding missions. No return address
He spawned near the docks. He revved the engine. It wasn't just the look; the "PC Better" part of the hack was true. The physics engine felt different. The car handled sharper, the nitro boosted harder, and the graphics seemed to render the reflections on the water at a higher frame rate than usual. Pátio 8
This article provides the ways to achieve the same “unlocked everything” experience on PC for version 4.7.8, without resorting to dangerous hacks.