1 A tanker truck carrying about 6,000 gallons (22,800 liters) of liquid petroleum gas exploded Sunday after skidding along a guard rail on a busy freeway, killing the driver, blowing the truck to bits and incinerating a car.
2 At least seven people were injured in the 9 a.m. explosion that sent a huge ball of flame into the sky, blew a hole in the road, ripped the guard rails and damaged the center divide.
3 Authorities closed the highway, the main interchange between Oakland, Berkeley and the San Francisco-Oakland Bay Bridge.
4 The truck's cab was blown over the other side of the freeway.
5 The California Highway Patrol said the cargo was a mixture of butane and liquid petroleum gas, a highly flammable liquid.
6 The driver's identity and company he worked for was not immediately known.
7 At least seven people were treated for burns, including an Oakland family of four that was driving to church in San Francisco. They fled their car, which was destroyed.

The California Highway Patrol said the cargo was a mixture of butane and liquid petroleum gas , a highly flammable liquid .
cargo
What company was the cargo for?