Rocker Gruff Rhys is launching an interactive project with a cell phone app in honour of Welsh explorer John Evans.

The Super Furry Animals frontman is fascinated with the bizarre story of his fellow countryman Evans, who trekked across the U.S. in the 18th Century on a futile search for other Welshmen.

The musician has decided to pay tribute to the intrepid explorer with his next solo project, American Interior, which includes a new album and a film, book, and cell phone app about Evans' story.

Rhys tells Q magazine, "It's so far-fetched he might as well have been a Welsh prince who went to Mars in 1969 and stayed and had loads of kids... John Evans put his life on the line chasing mythology, a fantasy. Maybe that's not such a great idea."