A man vanishes in the U.S. National Park, only to reappear miles away. How did he travel so fast?

Despite intensive searches, he was found in an area previously searched. No footprints, no tracks. His clothes were neatly folded next to him.
In 1969, Steven Kubacki went missing while skiing in the Michigan Triangle. Despite an extensive search, he was not found. 15 months later, he woke up in a field 700 miles from where he disappeared, wearing clothes that weren't his. He had no memory of the 15 months. His own clothes were neatly folded next to him. Despite medical checks, no anomalies were found.
Location: Michigan Triangle, USA
Year: 1969
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