 Complete the following phrase:  In the summer of 2008, in anticipation of the Summer Olympic Games, three new linesLine 10 Phase 1, Line 8 Phase 1 and the Capital Airport Expressopened on July 19. The use of paper tickets, hand checked by clerks for 38 years, was discontinued and replaced by electronic tickets that are scanned by automatic fare collection machines upon entry and exit of the subway. Stations are outfitted with touch screen vending machines that sell single-ride tickets and multiple-ride Yikatong fare cards. The subway operated throughout the night from Aug. 8-9, 2008 to accommodate the Opening Ceremonies of the Olympic Games, and is extending evening operations of all lines by one to three hours to 1-2 a.m. through the duration of the Games. The subway set a daily ridership record of 4.92 million on August 22, 2008, the day of the Games 