Light encircling my truck.

About 3 years ago I was a tow trucker out of Owen Sound Ontario. It was not uncommon for me to be up and down Southwestern Ontario from the cities on a daily basis.
A memory I have kept private for a long period of time is one I cannot explain and have finally decided to report.
I don't remember the exact date but it was a summer night. I always listen to music and jam when I'm driving.
I wa soperating a GMC C5500 Flatbed towtruck. It was yellow and I have many pictures of it.
One night after a day of trucking I was taking highway 6 Norrh late at night. It was either highway 6 or highway 10 as they both lead north to Owen Sound where I could get to my bed for the night.
I did not see any flying objects. What I experienced that night was unexplainable. The bwst way to explain it is to ask if you understand what it is like driving at night. For the most part you are in darkness. Except when going through towns or busy roads and intersections that are well lit.
I DID NOT notice the light until it disappeared like somebody flicked a switch. One moment my truck was encircles by bright white light as if I was in a well lit city with a spotlight on me.
In the next moment it was complete blackness around my truck. I was in shock and surprised so I pulled over. There were no lights behind me. I was not on a well lit road. The light did not scare me however. When I was in the light I felt secure and safe. When it went out I felt bare and exposed
The craziest part was the last part of the drive I could remember was being on the busy Kingsway coming out of the city. Over an hour had passed on my clock and I was much closer to home then I could believe. Over an hours worth of driving was behind me. I was further north on the highway.
In summary a bright light disappeared and I became aware of the knight itself and a duration of time gone by without being able to recall any moment of it.