Barney and Betty Hill were driving home from their honeymoon when a larger circular light seemed to be following their car. When they pulled over to get a closer look, they could not believe what they were seeing.

Sources:

https://www.outdoors.org/articles/blogs/the-story-of-betty-and-barney-hill

https://dash.harvard.edu/bitstream/handle/1/8862147/alien_abduction.pdf?sequence=1

https://www.history.com/news/first-alien-abduction-account-barney-betty-hill