US brand Cadillac is now offering a luxury vehicle subscription service called Book, perfect for the commitment-phobes among us. 

According to Cadillac, the service gives members access to the popular Cadillac vehicles without the commitment of leasing, financing or buying.

The program is designed to allow drivers to change vehicles to meet their wants or needs. For example, using an SUV during the winter for snow trips and a performance sedan in the summer.

For a flat monthly fee of $1500 members use a mobile app to reserve vehicles from a range of Cadillac models and have it delivered through a 'white glove concierge service'.

Members will have access to the current year Platinum Level Trim Cadillacs, including the XT5, CT6, Escalade and V Series. Registration, taxes, insurance and maintenance costs are included in the monthly rate and there is no limit on mileage.