Uber is a rapidly expanding car service that allows passengers to simply call a taxi to their location via a smartphone app. The service also allows passengers to pay via the app, meaning that users don't even need to have a credit card or cash on them.

While this is convenient, a lot of Uber drivers lose out as a result. While UberTAXI includes a 20 percent default tip in all of its fares, UberX, UberBlack, and UberSUV rides do not include any tip in the fare the App provides, nor do they even provide an option for tipping.

Peter Faris, an Uber driver in the D.C. Area, started a Care2 petition to change that. Already signed by almost 10,000 people, Faris's petition reads: