If global supply and demand continues and if it's the global market that continues to dictate what's available at the pump, it may well be that, even with a pipeline like Keystone XL, if it were to have gone ahead, Canadians would continue, in eastern Canada, for instance, to be pumping Saudi oil into their vehicles. Multinational companies and international supply and demand determine what you're buying at the pump. It has nothing to do with whether a new pipeline is built or not.
On March 30th, 2021. See this statement in context.