Surf’s rising at Air Canada.  The airline has expanded its successful ‘WEBSAVER’TM program of last minute travel bargains to include promotions on car rentals and hotel accommodations.  In its weekly e-mail to subscribers, Air Canada is now offering special hotel and car rental rates at selected weekend bargain destinations in cooperation with its Aeroplan hotel partners, Delta, Hilton and Radisson, and Aeroplan car rental partners, Hertz, Budget and Avis.