Steven Spielberg has dropped out of directing a remake of the classic James Stewart movie Harvey, according to industry newspaper Variety. It is thought Spielberg struggled to find a lead actor after Tom Hanks reportedly turned the role down and Robert Downey Jr refused to commit. The original film was based on a Pulitzer Prize-winning Broadway play of the same name by Mary Chase. It is thought studio 20th Century Fox will continue with the project. Harvey, which tells the story about a man who claims his best friend is a giant invisible rabbit, was a huge success. Stewart received a best actor nomination at the 1951 Oscars for his performance, while his co-star, Josephine Hull, won best supporting actress. Spielberg has not confirmed what he is planning to direct next. He has recently completed production on The Adventures of Tintin: Secret of the Unicorn.