A vehicle monitoring system, comprising: an interface configured to at least communicate with a controller area network bus; a remote data telecommunication interface; a database; at least one automated processor, configured to: extract information from the controller area network bus; store records in the database representing the extracted information; process the database to determine operating statistics; selectively communicate at least a portion of the database over the remote data telecommunication interface; and determine at least one of an operating parameter for the vehicle and a predicted net fuel cost based on at least the operating statistics and a fuel unit cost.