1. A method for determining a classification relating to the interior of a vehicle, comprising the steps of: (i) with an image capture device, acquiring a resultant image of a portion of the vehicle interior which is of interest; (ii) extracting information relating to a set of image features from the acquired resultant image; (iii) statistically processing the extracted information with a previously determined set of image feature information values, each member of the set of image feature information values corresponding to a respective one of a set of predefined classifications relating to the interior of the vehicle, to determine the most probable classification; and (iv) outputting the determined most probable classification related to the interior of the vehicle.