Startup Idea : Double Parking

Parking is the major issue in any metro city, where to park, will I get the spot, if I park in front of another car how that guy can call me to remove my car and I don't want to leave my number to strangers, Driver in other car does not hear my honking.. we daily face this challenge Idea is to have such a app which allow car to car talk. Change the nasty exchange of words in to lovely conversation.. Make driving as lovely experience than road rage.