Abstract: An on-board dynamic and interactive information and exchange system and method enabling passengers while traveling in transportation vehicles to acquire services from selective vendors located at intended destinations merging the purchase power of an individual customer into the purchase power of a group of customers. It also can merge in real time the purchasing powers of said groups of passengers in a plurality of vehicles traveling towards same destinations at given time intervals into a common network forming an even greater purchasing group. It also enables passengers to receive prices and deals at changing terms as getting closer to destination, and vendors to gain ‘captive audience’ prospective customers at concrete times.