2nd electric car battery fire involving Chevy Volt

The National Highway Traffic Safety Administration said Friday that three Volt battery packs were crash-tested last week. In one instance, the battery caught fire afterward, and in another the battery emitted smoke and sparks.

Last May, a fire erupted in the battery of a Chevy Volt that had been damaged during a government crash test three weeks earlier. Last week's tests were an attempt to replicate the May fire.