Money changers

[Powriv]

Scotiabank also has ATMs at Shell Gas Stations and 7-11 Convenience Stores

[Saving Up To Be Eccentric]

Will the Vancouver taxi drivers take US currency?

They'll also be happy to take most major credit cards, and you can choose to add a tip onto the fee in Canadian dollars. However, check before you leave on which credit cards will add service charges onto foreign currency transactions. I wound up not having any Canadian cash, but the big name credit cards were welcome just the same.