Because for some weird reason, it's the only station I've found around here that allows me to pay at the pump. And the only station I've found that has that nifty latch that allows my tank to fill while I sit in my warm car. Considering that it's 9 F outside right now (-13 C), and that I am usually traveling with small children, Petro-Canada has my business for now!
*Edited to add a link to this article about why it's best not to sit in the car while the tank is filling. Now I will have to locate the gas stations where an attendant comes out and fills the tank for me!
Proof and Certainty
16 hours ago