Not wanting to be outdone by measly old Cadillac, Porsche has just taken a step to out-innovate the New York-based automaker by announcing its own subscription service that it dubs Porsche Passport. Much like GM's Book by Cadillac, Porsche Passport allows subscribers near unlimited access to its sports cars and SUVs, with up to 22 different Porsche models available to drive. Owners don't have to worry about milage restrictions, can change vehicles frequently, and have on-demand access to most of its lineup.

As one might expect this service does not come cheap, but Porsche has at least built two pricing tiers into the program so that owners can have some degree of control. The entry-level subscription is called "Launch" and can be had for the low price of $2,000 per month ($24,000 per year). It gives access to eight model variants like the 718 Boxster and Cayman S as well as the Macan S and Cayenne. Bump up to $3,000 ($36,000 per year) package and subscribers can have access to all 22 models including the 911 Carrara S, Panamera 4S, Macan GTS, and Cayenne S E-Hybrid. With either plan, Porsche provides "white glove" delivery to subscribers that order a car via the Porsche Passport app.

Porsche, which has its US headquarters in Atlanta, Georgia, has partnered with Atlanta-based Clutch Technologies to bring this pilot program to life. Given that it's still in the test phases, it's only available to subscribers in Atlanta, though for the price Porsche covers vehicle registration and tax, insurance, detailing, and maintenance. As with Cadillac's program, Porsche Pilot allows its subscribers to order a 911 for curvaceous canyon driving and then switch to a Cayenne for a camping trip in the badlands. To sign up, one has to have the income and credit score to support that kind of monthly bill and then pass a background check before they can hope to use the service.

Once cleared, Porsche will active subscriber accounts in November 2017. From that point, users can have cars delivered on the same day they request them or schedule deliveries in advance using the app. Will services like this catch on with other automakers? Only time will tell, but there's no question that Porsche Passport and Book by Cadillac are reflections that the app-based service economy is having an effect on the auto industry.