Startup Idea : Taxi dispatching system

I design a business plan - detail like that, the current taxi dispatching system is transferring to GPS, but still each taxi company has its own system, some of them have been using iPhone APPs, or Android APPs (Passengers can save money, don't waste mobile phone call). Whatever APPs, still, passengers can only use that APPs to call that taxi company. If you want to know each taxi company taxi dispatching, then u have to install all APPs. I design the flow and platform to be C2C, the system will have Driver APP, and Passenger APP. The Taxi Driver (whatever taxi company) simply install that Jordan's drver app, then can get the passenger app call. With this system, taxi driver can save more money from taxi company. At the same time, passenger can choose the proper taxi ( search reach result, can see car brand, how old, recommendation, how long distance, ... ) Anyone want to invest this system. Or not worth?