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 first responsive object sensor for sensing when the first responsive object is within the vehicle; a second sensor for sensing a first state of the vehicle; 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 within the vehicle; and a scheduler for making a reservation based on a response from the proxy.