Wallet found jamming the doors of Madrid underground train 26 (UPI) -- Police in the Spanish capital said a wallet found by a maintenance worker in an underground train contained a check made out for $2 million. Madrid police said a maintenance worker for the city's underground railway network was attempting to discover why the carriage doors of a train on line 5 of the Madrid Metro weren't closing properly Wednesday when he discovered a brown leather wallet jammed into the frame of the door, The Local.es reported Thursday. The worker turned the wallet over to police, who found it contained a California driver's license, credit cards and a check made out for $2 million.