Road Cutting

That's what I call it anyway. I'm driving along, plenty of room behind me for a vehicle to slip into my lane when, out of nowhere a driver pulls up alongside, and zips in between me and the car in front of me, just barely enough room. Damn! Why was that necessary? Was the risk of an accident worth the 1/10th of a second advantage? If you put your blinker on I would have even backed off so you could get in front of me. It feels like 'king of the hill' to me and I hated that game in elementary school ... no one won. And if you cause an accident, no one wins here either!