How do you decide when waiting in line for gas at Costco is worth it versus just going to a nearby station?

What was the last great invention everyone now owns and takes for granted?
Is there a smart way to use Costco credit cards and memberships to maximize savings on gas?
Are we doing enough to train the next generation of skilled tradespeople in Canada?
How would you react if a photograph you took later revealed a figure that wasn’t physically present when you took it?