An on-line vehicle management system includes a vehicle group having a plurality of vehicles and an in-vehicle telematics unit in each vehicle. A call center is in selective operative communication with each telematics unit and an Internet-enabled program. The call center receives vehicle data from each vehicle in response to a predetermined trigger, and stores the received data in a database. The Internet-enabled program includes a Gregorian calendar with spreadsheet functionality. The Internet-enabled program automatically receives at least some of the stored data from the call center, and inputs the received data into predetermined calendar cells. The Internet-enabled program is also configured, in response to a predetermined user request, to i) render the received data accessible to an authorized user associated with the vehicle group, ii) generate reports based on the received data, and iii) at least one of derive or calculate information from the received data.