Coordinate responses of multiple mocks

Hi,

I need to coordinate the responses of two or more mocks.  One service provides planned vehicle route information and one or more other services provide "real-time" vehicle positions after the vehicle begins traveling from its departure to arrival location.  I've thought about implementing a "coordinator" service that the others communicate with, but it isn't clear how I would discover the coordinator service's endpoint since we run these mocks both in SoapUI proper and in Tomcat.

Any ideas would be greatly appreciated.

Thanks

Scott