Low Level Brightly Lighted Sphere Hovering in a Residential Neighbourhood

My sighting took place in an urban residential area in the west side of Ottawa, Ontario, Canada.  I was returning home about midnight driving my VW Beetle.  I turned into the subdivision from a main thoroughfare.  At the first stop sign, I sighted a spherical object about a meter in diameter hovering in the middle of the residential street about a half a block on my left.  I turned left in order to approach the object which was in the center of the road and suspended about 10 feet above the road surface.  I approached slowly and got within 60 feet of the sphere.
 The object was bobbing like a cork on the water and was emanating light from its surface.  The light consisted of brilliant colours that seemed to rotate around its surface.  I remember red, blue, orange and yellow patches of light rotating in a random fashion all over its surface.  My impression is that the light was actually photons being emitted by ionized air molecules as the colours were very pure like laser light.
 I crept slowly forward observing the object through the front windscreen.  When I got within 60 feet the object began to react and drifted with a bobbing motion toward the far side of the road.  It went behind a small tree and between two adjacent houses.  I could see the light being reflected off the aluminum siding of one of the adjacent houses.
 I quickly drove to the end of the block and turned on the side street to go to the next street over to see if it was still visible.  As I turned onto the next parallel street, it was once again hovering in the middle of the road at about the same height.  This time I approached at a little higher speed to see if I could get closer.  The object reacted by once again moving between two adjacent houses in the direction of the third parallel residential street.  I quickly moved around the block to see if it would be in the middle of the third street.  Sure enough it was, once again hovering in the middle of the road.  This time as I rounded the corner it took off at about a 20 degree angle at an astonishing speed.
 I have witnessed night time artillery firing trials where the projectile from the artillery piece was a tracer and the speed of this object as it left was much quicker than an artillery round leaving a cannon.
 I heard no noise at all during this encounter but of course the engine noise of a VW Beetle is considerable.  However, the departing speed had to be several times the speed of sound and there was no sonic boom.
 Since this incident, I and my daughter have both experienced some unexplained night-time events that neither of us can explain but where untraceable blood was found on our pillows and sheets.  These incidents happened at several different residential locations over the course of a couple of decades but have now stopped.