Driving down a busy street in Hillsboro,an acorn shaped craft caught my eye. I looked at the road and it disappeared.

My 2nd sighting was a "acorn" shape.  
I was driving to the store about a mile from my house when I saw this "acorn" a few hundred feet above the street.  I had a  "circus like" feeling --happy -.  This was my 2nd sighting this summer.  It didn't appear that anyone saw what I saw.  The reason I'm reporting these two sightings is because I feel no one else saw these craft.  
I also feel that I saw these sightings because I was so in tune with nature at that time (my garden & all} and it appeared that no one else saw the "acorn" on the busy street.  It was low but when I glanced away to check my driving and looked back it was gone.  My point here is - maybe one has to be in a certain frame of mind to see these - .
Witness indicates that the date of the event is approximate.  PD