What does “on demand” mean? It means you can get a ride when you need it, in real time. You don’t have to schedule your ride in advance. How does exo à la demande work? Download the app, then create an account using your name, phone number and email address. To book a ride, enter your current location and your destination, and the app will provide you with available options. Once your ride is booked, go to the designated intersection and track the vehicle in real time.