A tanker truck in Texas hauling gasoline erupted into a fiery blaze Sunday after colliding with another vehicle and knocking over power lines, leaving the truck driver in critical condition, Fort Worth authorities said. The 18-wheeler was carrying 9,000 gallons of gasoline that began leaking after the truck spun off the road near a gas station. The downed power lines then sparked a fire around 1 a.m., Fort Worth Fire Department spokesperson Craig Trojacek said.