Connected cars are everywhere and writing apps for connected cars is an emerging space. OpenXC is an open JSON data API for Ford cars that enables developers to write custom apps for telemetry data in real time, this includes geographic location.Bandwidth and connectivity in a car is limited however and as such an app needs to be written to be offline first. This talk discusses the difficulties of connected cars and how to overcome this big data problem with PouchDB, CouchDB, Leaflet and Google Chrome Applications.