One card does it all. Purchase fuel, snacks, car washes and so much more at over 1, 500 participating Petro-Canada retail locations. Petro-Canada eGift- Cards cannot be used to purchase prepaid cards or gift cards. This eGift-Card can be used in conjunction with any other form of payment accepted at Petro-Canada including cash, credit or debit cards, so you enjoy the full value of the card.