Hi
We are Enterprise Mobile Application Developers and developed Similar Taxi Application, We can Develop your application to share ride, we can do this by Creating separate login to verify each user either by mail or Social sites, if user want to share their ride then they can have chat with them, check profile etc.
We can develop this application in Cross Platform which supports all OS. Detailed discussion will help to understand more.
Looking Forward to hear from you,
Thanks,
Mani Bharathi.