The Indianapolis metropolitan area is a major center for agribusiness, distribution and logistics, life sciences, manufacturing, and motorsports.The Indianapolis metropolitan area is a major hub for motorsports, specifically American open-wheel car racing.[15] More than 40 collegiate fraternities and sororities are headquartered in the Indianapolis metropolitan area, the largest concentration in North America.[16][17] Indiana's "Crossroads of America" moniker is largely attributed to the historical function of the Indianapolis metropolitan area has played as a center for logistics and transportation.[18] Other airports within the region include: Indianapolis Union Station is served by Amtrak's Cardinal, which operates thrice-weekly between Chicago and New York City.Other major sporting events hosted include Pan American Games X in 1987, Super Bowl XLVI in 2012,[20] and the 2013 International Champions Cup between Chelsea F.C.