1. A navigation system for a vehicle comprising: a vehicle-based telematics system; a vehicle-based global positioning system operable to determine a geographic position of the vehicle; and a control, said telematics system being operable to receive a user input from a driver of the vehicle and download directional information from an external service provider to said control in response to said user input and an initial geographic position of the vehicle, said directional information comprising at least two instructions with each of said at least two instructions being coded or associated with or linked to a respective geographic location, said control being operable to provide an output corresponding to each of said at least two instructions in response to a current actual geographic position of the vehicle determined by said vehicle-based global positioning system, said control being operable to provide each instruction only when the then current actual geographic position of the vehicle at least generally corresponds to the particular geographic location associated with said each instruction.