This app was mentioned in 1 comment, with an average of 2.00 upvotes
This is called carpooling and is a great idea, but not a new idea.
http://mashable.com/2012/08/13/carpool-apps/#Kg8GHO3LBgqR
https://play.google.com/store/apps/details?id=com.delvelogic.carpool.Activity&hl=en