Driving home on Route 51 in the HOV lane we were tailgated by a Yellow Cab, #444, who kept driving his horn and flashing his lights. We were driving 65 mph, the legal limit, and could not drive faster. After a couple of minutes of this we decided to exit the HOV in order to accommodate this unsafe driver and was horn blasted by the cab who passed us at a high rate of speed. Ordinarily we would not rate a cab company but this company apparently doesn't screen their employees and its a "ride at your own risk" situation if you use them.