In the beginning of the "Big Chase Scene" when Memphis starts up Eleanor for the first time the camera cuts to a shot of the whole car from the passenger side, as we hear the car roar to life for the first time blue exhaust smoke bellows out from under the back of the car. This is very interesting as the car has side exhaust pipes, and this is where we should see the exhaust come from. The side exhaust pipes are obviously just there for appearances.