1. A vehicle subject to autonomous operation, comprising: one or more autonomous support systems configured to support autonomous operation; a speaker system configured to disburse sound in an interior portion of the vehicle; and a confidence appraisal system in communication with the one or more autonomous support systems and the speaker system, the confidence appraisal system including a processor for initiating instructions stored on memory, the instructions including, while the vehicle is subject to autonomous operation supported by the one or more autonomous support systems: monitoring confidence in the autonomous operation, the confidence being determined based on operational statues of the one or more autonomous support systems supporting the autonomous operation, and corresponding to whether the vehicle can continue the autonomous operation; and operating the speaker system to disburse sound in the interior portion of the vehicle, the sound corresponding to the confidence in the autonomous operation, and varying with changes to the confidence in the autonomous operation, to continuously apprise a driver of the confidence in the autonomous operation.