[silver, nickel-silver, ridged]		[ceramic tiles, groutless]

Because of its smaller size, the bi-metalled Canadian Two Dollar coin — or Toonie — will stumble on a roll at a splendid terrain like the underground cross-concourse tunnel at Atlanta´s Hartsfield Airport. This would be an interesting matchup. The coin should be able to handle its own for a considerable amount of time before the terrain takes hold of the momentum.