Followed by Mork

I was driving the 109 and as soon as I crossed over the Humptullips River I was hit with a light that lit up the inside of my car. I looked to my left and saw what appeared to be a flying egg. The egg would appear on my left side and right side matching my speed of 60mph. In intervals of ??? Maybe every 2 seconds the egg would pulse out a bright white light that would light up the highway. When the egg was behind the trees the light wasn't as bad. The egg followed me for approximately 4.2 miles. I pulled over as it was annoying the hell out of me. I watched it behind the treetops and other travelers noticing it started to pull over too. At this point it dawned on me to grab my camera out and document the situation. I took a 30 second video which I will upload. The craft made no noise, no jet engine, helicopter blade or propeller.