On a New York City street corner, Marty makes the world first portable cellular phone call (to Joe Engel, the chief of research for Bell Laboratories) and is cited for it in the Guiness Book of World Records.

On a New York City street corner, Marty makes the world first portable cellular phone call (to Joe Engel, the chief of research for Bell Laboratories) and is cited for it in the Guiness Book of World Records.