CBS Boston / WBZ | Driver Trapped Under Oil Tanker After Crash On I-495 CBS Boston / WBZ The truck driver tried to brake but both vehicles went off the road and the oil truck rolled over. While the home-heating oil that the truck was carrying leaked during the duration of the rescue, hazmat officials said it could have been worse. Hazmat ... Oil tanker overturns onto car on I-495, trapping driver inside |