The present disclosure provides systems and methods for operating autonomous vehicles. In one example embodiment, the method includes receiving an instruction for an autonomous vehicle to autonomously travel in an autonomous mode from a first location to a second location. When operating in the autonomous mode, the autonomous vehicle is restricted to operating within a limited operating envelope. The method includes receiving data indicative of a request by a human operator to operate the autonomous vehicle. In response to receiving the data indicative of the request by the human operator to operate the autonomous vehicle, the method includes authorizing the autonomous vehicle for operation by a human operator in a non-autonomous mode outside of the limited operating envelope. The limited operating envelope limits at least one operating capability of the autonomous vehicle based at least in part on an operating limit associated with an autonomous system for the autonomous vehicle.