Shoppers are likely to abandon a line that might take between one and 10 minutes to get through after the first two or three minutes if they feel it isn't moving sufficiently fast enough for them, says Narayan Janakiraman, an assistant professor of marketing at Eller College of Management at the University of Arizona.

WSJ: Find the Best Checkout Line

Ferrari desperately tried to close down the world championship leader in the dying minutes but, though they were fast through the first two sectors, they could not match the McLaren man's pace.

BBC: Hamilton takes Canadian GP pole

The match lasted five hours and two minutes, the latest in a long line of tennis epics by this generation of fast-moving, heavy topspin hitters.

WSJ: Wawrinka Shows Way to Beating Tennis's Big Four