I glance in the rear view mirror and the left lane is clear behind me. Suddenly I see a black truck going very fast, and it catches up to my car. The driver appears to want to pass, but there's no room for me to move to the right lane. I speed up to find a clear space to get over. I'm doing over 80. The truck is right on my bumper. I notice in my rear view mirror that there is no logo on the front. The grill is smooth and black. The whole truck is painted flat black. Not shiny. With the angle of the sun, it is hard to see through the windshield. I can finally get over. My speed is approaching 90, so I slow down after changing lanes. The truck roars away as if it a has a top gear that engages over 80 miles an hour. I loosen my grip on the steering wheel and let out a breath I hadn't realized I was holding.