The brand with the Four Rings is now launching the successful premium mobility concept Audi on demand in Singapore. Sophisticated drivers and Audi aficionados can access a wide selection of the latest Audi models at the touch of a button. The duration of use for each vehicle can be as short as four hours or as long as 28 days. A concierge service brings the car to the customer by request. The service also is offered in Beijing, Hong Kong, San Francisco and at Munich Airport.