Gibson and Michael J. Fox seek the missing "Back to the Future" guitar, launching a 40th-anniversary search.

Gibson, the guitar manufacturer, and Michael J. Fox are searching for the iconic Gibson ES-345 guitar used in "Back to the Future." The cherry red guitar, featured in the film's pivotal scene, has been missing since 1985. Gibson has created a website, "Lost to the Future," and a hotline to gather tips on its whereabouts. The search marks the 40th anniversary of the film and includes a documentary on the effort.