By Kirk O’Neil Six Flags is rolling out a record-breaking new roller coaster ride. Theme parks across the country have been introducing new rides frequently this year to meet the challenges from their competition. Walt Disney Co.’s (DIS) – Get The Walt Disney Company Report theme parks have lined up a series of new ride openings this year, as it on May 27 launched its Guardians of the Galaxy: Cosmic Rewind roller coaster ride at Disney World’s Epcot in Orlando. Disneyland in Anaheim, Calif., is preparing to open its refurbished and reinvented Finding Nemo Submarine Voyage ride on July 25 after…