45 years ago!
With Jack Kirby’s departure from Marvel in 1970, John Buscema, with an already iconic run on The Avengers, succeeded him on both of Kirby’s titles: Fantastic Four (penciling issues #107-141) and Thor.
While returning home in the Fantasti-Car following their battle with Galactus, the Fantastic Four are shocked when Reed suddenly faints and topples out of the vehicle. Johnny flames on and comes to Reed’s aid, saving him from a fatal fall, while Sue and Ben narrowly avoid a serious crash when the vehicles controls jam. Landing on the ground, the Fantastic Four are surrounded by a throng of onlookers. Needing to get Reed medical attention immediately, Sue uses her powers to render the group invisible so they can slip away unseen.