Ferries connect the italian ports of Venice, Ancona, Bari, Brindisi with the greek Patras, Igumenitsa and Corfu. Further information on ferries at http://ferries.gr/ Truck companies, have special deals with the ferry companies. Their deal includes a free ticket for their co-driver. Many times the truck owners (the free ticket applies only if the truck owner is travelling and not a worker)travel alone so they still have the co-driver free ferry ticket. You can try to ask them on the ports, if you can have their free ticket. Just go few hours before the ferry's departure.