Directed by 88-year old Clint Eastwood, The Mule also stars the legendary cineaste as a a 90-year-old Korean war veteran turned drug runner in the film which finds itself sitting pretty at number two in its opening weekend at the US box office.

At 88 years of age, many another would be folding up their director's chair but the former mayor of Carmel is, it seems, unstoppable. In the movie Clint's 90-year-old horticulturist and Korean War veteran is apprehended as he transports $3 million worth of cocaine through Illinois for a Mexican drug cartel. Written by Sam Dolnick and Nick Schenk, the film was inspired by the New York Times Magazine Article The Sinaloa Cartel's 90-Year Old Drug Mule.

Bradley Cooper and Taissa Farmiga star in the film as does Clint's daughter Alison, taking time out presumably from her other areas of activity (which include director, producer, fashion model, and fashion designer.)

The Mule has already surpassed the box office intake of the last film in which Eastwood starred, Trouble With the Curve. It is expected that the movie will achieve at least $90 million (€78m) at North American box offices.

Incidentally, veteran critic Roger Ebert believed that Eastwood's 1993 movie, A Perfect World may well prove to be his most underrated work in 60 odd years of film-making.

 "A Perfect World contains a prison break, the taking of a hostage, a chase across Texas, two murders, various robberies, and a final confrontation between a fugitive and a lawman," wrote Ebert.  "It’s not really about any of those things, however. It's deeper and more interesting than that. It's about the true nature of violence and about how the child is father to the man."

The movie's core premise centres on the relationship between the outlaw and the boy whom Costner’s character kidnapped. "You can look hard, but you won't be able to guess where this relationship is going," Ebert continued.

"It doesn't fall into any of the conventional movie patterns. Butch isn't a terrifically nice guy, and Phillip isn't a cute movie kid who makes and then loses a friend. It's not that simple."