A system within an environment of a vehicle in which one or more electronic control unit(s) (ECU) having its own communications protocol stack (e.g., a TCP/IP stack) can communicate with an ECU gateway that functions as a component of an infotainment system. Each ECU can thereby publish its own data in real time, through an Internet (or similar) connection in the infotainment system, to a broker that can store the data from all connected ECUs of a plurality of vehicles. A backend system can subscribe to certain published data feeds (e.g., all ECU-2 and ECU-3 data from every 2010 model vehicle, or all ECU-2 data from every vehicle) via the broker to pull a specific subset of available data for analysis and/or visualization. The present invention enables users of a backend system to query for data from vehicles that are not connected to the Internet in real time.