Mobile information processing system

In order to make better use of personal information manager data and to improve the convenience for the user, in cases where such personal information manager data is used in a vehicle V, the personal information manager data including position data and time data and traffic information are input from outside the vehicle V so as to guide the user using the vehicle V along a travel route based on the personal information manager data and in association with the position data, whereby it is possible to appropriately guide the user using the vehicle V along the travel route according to the position data of the personal information manager data.