A hybrid Zipcar

Zipcar, an instant rental car company geared to urbanites, is launching a mobile tracking system for customers with GPS on their phones.

Customers can locate a Zipcar service with their GPS-enabled handsets if they need a car in a pinch.

Once a Zipcar is located, customers can make an instant reservation on their handsets, then unlock the car by pressing a company membership card to the windshield.

When finished, customers simply return the car to a designated parking space.

Observing this process, Springwise points out that GPS-enabled phones resolved what would have been a logistical nightmare just a few years ago.