How do you unlock the lamborghini aventador in nfs the run on 3ds?

To unlock the Lamborghini Aventador in "Need for Speed: The Run" on the Nintendo 3DS, you need to complete the game’s story mode. After finishing the main campaign, the Aventador will become available for you to use in races. Additionally, you can also try completing specific challenges or achievements to unlock it earlier, depending on the game's mechanics.