1. A system comprising: a vehicle; a first responsive object capable of responding to a first inquiry about the state of the first responsive object, wherein the first inquiry is formatted in accordance with a first protocol; a proxy for responding to the first inquiry about the state of the first responsive object with the state of the vehicle when the first responsive object is (a) within the vehicle and (b) inoperable to respond to the first inquiry; and a scheduler for making a reservation based on a response from the proxy; wherein the first responsive object comprises a first sensor that is used by the first responsive object to determine the state of the first responsive object; wherein the vehicle comprises a second sensor; and wherein the proxy intercepts the first inquiry that is directed to the first responsive object, when the first responsive object is within the vehicle, and responds to the first inquiry with the state of the vehicle as measured by the second sensor.