Listed phone # does not work, so no way to contact the company. Dangerous driver on I-66 west in northern VA on 08-28-15 around 1 pm. Driver was over 80 mph, in and out of trafiic with no signals at all. Driver was tailgating and driving sggesively. At times 70 plus mph and with in 2 feet of the vehicle ahead. Seen talking on a hand held cell phone which is illegal for CDL drivers and on several occasions with both hands off the wheel.