Neighbours lose several hours while on road trip...

I have looked through this site, but I am looking specifically for a place to record an incident of missing time, which occurred when I was 30 years old.  Perhaps someone would be kind enough to point me to a more suitable site?  In September, 1973, a neighbour and I were intending to drive to Port Alberni, a  city about one hour away, in a northwest direction from my home in Nanaimo, BC.  We left my house around 10 am, drove about a half hour north, and we both clearly remember turning west onto the highway leading towards Port Alberni.
 However, our next clear recollection occurred about seven hours later.
 We suddenly found ourselves on a dirt road, with the car motor running, and it was after five oclock.  There was absolutely no memory for either of us, of how we had spent the missing hours.  My friend was absolutely terrified, crying and shaking uncontrollably.  On my part, I was deeply puzzled about where we were, slightly shaken, but not really frightened.
 Since we did not know where we were, after a few minutes, I simply started driving in the direction my car was pointed.  After about 10 minutes, we reached the Island Highway, but we were roughly one hour south of where we started out in Nanaimo.  The place we re-entered the Island Highway was one and a half hours south or about 80 miles from where we both remember turning onto the Alberni Highway.
 I have absolutely no conscious memory of aliens, a craft, or anything of that nature, but I know that this experience can have few other explanations.
Date of incident is approximate.  We have contacted the witness and requested a report from the second party.  The individual who submitted this report is a highly educated professional.  We have proposed to the person that further investigation into the incident is possible, and may yield more information with regard to what may have taken place on that day.  PD