A tanker truck is rear-ended in Louisiana - causing a huge explosion.
It happened Wednesday morning near Baton Rouge.
Police say the tanker stopped on the highway because of a car crash.
That's when an 18-wheeler hit the tanker.
The tanker was hauling about 9,000 gallons of isobutane - similar to propane used in barbecue grills.
No one was hurt in the explosion.
