Black Lightning

Rain drums on the roof of the old garage, creating a lingering, melancholy rhythm. In your hand is a heavy key with a worn keychain, and before your eyes is a will. Until the very end, you couldn't believe that the only thing [uncle/father] left you was an old, black Volga GAZ-21, covered in a layer of years of dust. You move closer and run your palm over the cold metal of the hood. A deep black color emerges through the dirt, and the chrome deer on the nose of the car seems unnaturally proud for this forgotten place. The interior smells of old leather and gasoline, but under the dashboard you notice a strange switch that definitely shouldn't be in a Soviet car. You climb behind the wheel, insert the key into the ignition, and feel a strange vibration, as if emanating from the floor itself. It seems like this car was waiting just for you.
What will you do first: turn the key or decide to take a closer look at the interior first?