A product information system for marketing real estate and/or motor vehicles including a database containing information relevant to a plurality of motor vehicles and/or properties, each property and/or motor vehicle being identified by an identification code; a database query module operably associated with the database and operable for retrieving some of the information according to a database query; a query interpretation module operably associated with the database query module and operable to interpret queries to the database by conversion to the database query from a spoken or typed query; a query input module operably associated with the query interpretation module and operable for producing the spoken or typed query input by a user; and a response output module operably associated with the database for outputting a response to the database query and wherein the response includes information relevant to the property or motor vehicle identified by the identification code.