in dargten, they don't need statistics to tell you that.ears ago, this neighborhood saw barely two trains a day. and then the trains were sold to national and the trains began to roll. >> if there's a derailment in the heart of my town and a breach of the tank cars there can be a plum of flame high into the sky and several cars rupture and oil burns, there would be a lot of destruction in the center of town. >> reporter: the response from the government so far is demanding better tank cars supposedly less prone to explode but the cars that exploded in west virginia were new. they still split open and re rerupted in flames. the cause is still under investigation. and the person who used to run the hazardous pipeline administration. he said it's not the tanker that's the problem, it's the rails that carry them. >> they need to say, look you guys need to keep the trains on the tracks. it's that simple. >> reporter: statistics show that after human error, they're caused by one reason bad rail tracks. >> we have invested billions of dollars and