Paul McCartney has said that Elvis Presley partly provided the inspiration for The Beatles' seminal Sgt Pepper album. McCartney told Rolling Stone: "We had this idea that we'd make a record, and the record itself would go on tour for us. That came from a story we'd heard about Elvis' Cadillac going on tour. We though that was an amazing idea: He doesn't go on tour, he just sends his Cadillac out. Fantastic!"
So there you go.