Cadillac has rolled out its Book vehicle subscription service in Los Angeles and Dallas, after introducing it in New York City in January.

For a monthly fee of $1,800, subscribers can drive a variety of Cadillac vehicles without a long-term commitment. The on-demand service allows subscribers to book vehicles using a smartphone app. Cadillac also charges a one-time $500 initiation fee.

Users can exchange their Cadillac up to 18 times per year using a concierge service at a location they choose. Maintenance, insurance, and detailing are all covered.

Cadillac has also launched the service in Munich, Germany, and plans to offer it in several other global markets.

U.S. subscribers have access to the CTS-V, ATS-V, CT6, CT6 Plug-In, XT5, Escalade, and Escalade ESV. Munich members have access to the XT5, CT6, Escalade, ATS-V, and CTS-V. The 2018 CT6 models are equipped with Super Cruise, a hands-free driving system for the freeway. The models are either from the 2017 or 2018 model year and are Platinum and Premium Luxury trims.