Uber is a disruptor in the field of transportation in that its entire private car network is run through a smartphone app. You're in a city that has Uber, you open up the application, and within seconds you've got a car en-route to your location to collect you and set you on your merry way.
You get a choice of how to travel – which includes private jet if you visit the Cannes Film Festival – and an idea of how much it'll cost you before you book the car. Sure, the fare may change during the journey but with Uber taking no cash, it isn't so much of an issue. You hook up your Google Wallet or PayPal account to the app and that's how you pay. Just get in the car and go.
For those who like living on the bleeding edge, Uber also runs a public beta program for its Android app.